v3.25.2
Cover Page - shares
6 Months Ended
Jun. 30, 2025
Jul. 25, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 1-37774  
Entity Registrant Name AdvanSix Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 81-2525089  
Entity Address, Address Line One 300 Kimball Drive  
Entity Address, Address Line Two Suite 101  
Entity Address, City or Town Parsippany  
Entity Address, State or Province NJ  
Entity Address, Postal Zip Code 07054  
City Area Code 973  
Local Phone Number 526-1800  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol ASIX  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   26,844,187
Amendment Flag false  
Entity Central Index Key 0001673985  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31  
v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Statement [Abstract]        
Sales $ 410,022 $ 453,479 $ 787,813 $ 790,308
Costs, expenses and other:        
Costs of goods sold 351,308 372,111 675,628 705,975
Selling, general and administrative expenses 25,416 24,431 48,825 48,024
Interest expense, net 2,255 3,514 3,796 6,213
Other non-operating (income) expense, net (607) 1,351 (1,015) 1,441
Total costs, expenses and other 378,372 401,407 727,234 761,653
Income before taxes 31,650 52,072 60,579 28,655
Income tax expense 279 13,145 5,864 7,124
Net income $ 31,371 $ 38,927 $ 54,715 $ 21,531
Earnings per common share        
Basic (in dollars per share) $ 1.17 $ 1.45 $ 2.04 $ 0.80
Diluted (in dollars per share) $ 1.15 $ 1.43 $ 2.01 $ 0.79
Weighted average common shares outstanding        
Basic (in shares) 26,896,037 26,839,429 26,867,252 26,859,044
Diluted (in shares) 27,223,309 27,150,347 27,248,976 27,251,326
v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of Comprehensive Income [Abstract]        
Net income $ 31,371 $ 38,927 $ 54,715 $ 21,531
Foreign exchange translation adjustment 24 (27) 35 (42)
Cash-flow hedges 0 0 7 7
Other comprehensive income (loss), net of tax 24 (27) 42 (35)
Comprehensive income $ 31,395 $ 38,900 $ 54,757 $ 21,496
v3.25.2
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 18,446 $ 19,564
Accounts and other receivables – net 159,702 145,673
Inventories – net 221,764 212,386
Taxes receivable 15,243 503
Other current assets 19,021 8,990
Total current assets 434,176 387,116
Property, plant and equipment – net 936,309 917,858
Operating lease right-of-use assets 136,888 153,438
Goodwill 56,192 56,192
Intangible assets 41,619 43,144
Other assets 41,218 37,172
Total assets 1,646,402 1,594,920
Current liabilities:    
Accounts payable 231,907 228,761
Accrued liabilities 48,200 47,264
Income taxes payable 384 1,047
Operating lease liabilities – short-term 38,718 42,493
Deferred income and customer advances 1,858 37,538
Total current liabilities 321,067 357,103
Deferred income taxes 151,938 145,299
Operating lease liabilities – long-term 99,037 111,400
Line of credit – long-term 240,000 195,000
Other liabilities 10,628 11,468
Total liabilities 822,670 820,270
COMMITMENTS AND CONTINGENCIES (Note 9)
STOCKHOLDERS' EQUITY    
Common stock, par value $0.01; 200,000,000 shares authorized; 33,152,286 shares issued and 26,844,187 outstanding at June 30, 2025; 32,989,165 shares issued and 26,737,036 outstanding at December 31, 2024 332 330
Preferred stock, par value $0.01; 50,000,000 shares authorized and 0 shares issued and outstanding at June 30, 2025 and December 31, 2024 0 0
Treasury stock at par (6,308,099 shares at June 30, 2025; 6,252,129 shares at December 31, 2024) (63) (63)
Additional paid-in capital 140,097 136,872
Retained earnings 677,354 631,541
Accumulated other comprehensive income 6,012 5,970
Total stockholders' equity 823,732 774,650
Total liabilities and stockholders' equity $ 1,646,402 $ 1,594,920
v3.25.2
CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares
Jun. 30, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Common stock par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 200,000,000 200,000,000
Common stock, shares issued (in shares) 33,152,286 32,989,165
Common stock, shares outstanding (in shares) 26,844,187 26,737,036
Preferred stock par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 50,000,000 50,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Treasury stock (in shares) 6,308,099 6,252,129
v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Cash flows from operating activities:    
Net income $ 54,715 $ 21,531
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 38,639 38,264
(Gain) loss on disposal of assets (177) 261
Deferred income taxes 6,646 751
Stock-based compensation 4,287 4,404
Amortization of deferred financing fees 309 309
Operational asset adjustments 0 1,200
Changes in assets and liabilities, net of business acquisitions:    
Accounts and other receivables (13,994) (6,004)
Inventories (9,378) 36,004
Taxes receivable (14,740) 1,255
Accounts payable 12,423 (61,681)
Income taxes payable (663) (7,026)
Accrued liabilities 561 6,149
Deferred income and customer advances (35,680) (14,530)
Other assets and liabilities (10,395) (6,889)
Net cash provided by operating activities 32,553 13,998
Cash flows from investing activities:    
Expenditures for property, plant and equipment (62,327) (68,883)
Other investing activities (5,891) (3,736)
Net cash used for investing activities (68,218) (72,619)
Cash flows from financing activities:    
Borrowings from line of credit 231,500 257,500
Repayments of line of credit (186,500) (197,500)
Principal payments of finance leases (491) (502)
Dividend payments (8,580) (8,582)
Purchase of treasury stock (1,537) (10,385)
Issuance of common stock 155 427
Net cash provided by financing activities 34,547 40,958
Net change in cash and cash equivalents (1,118) (17,663)
Cash and cash equivalents at beginning of period 19,564 29,768
Cash and cash equivalents at the end of period 18,446 12,105
Supplemental non-cash investing activities:    
Capital expenditures included in accounts payable 14,762 14,932
Supplemental cash activities:    
Cash paid for interest 2,297 6,015
Cash paid for income taxes $ 15,080 $ 13,587
v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2023   32,598,946        
Beginning balance at Dec. 31, 2023 $ 739,237 $ 326 $ 138,046 $ 605,067 $ (58) $ (4,144)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (17,396)     (17,396)    
Comprehensive income            
Foreign exchange translation adjustments (15)         (15)
Cash-flow hedges 7         7
Other comprehensive income (loss), net of tax (8)         (8)
Issuance of common stock (in shares)   323,989        
Issuance of common stock 426 $ 3 423      
Purchase of treasury stock (7,023)   (7,020)   (3)  
Stock-based compensation 2,211   2,211      
Dividends (4,290)   163 (4,453)    
Ending balance (in shares) at Mar. 31, 2024   32,922,935        
Ending balance at Mar. 31, 2024 713,157 $ 329 133,823 583,218 (61) (4,152)
Beginning balance (in shares) at Dec. 31, 2023   32,598,946        
Beginning balance at Dec. 31, 2023 739,237 $ 326 138,046 605,067 (58) (4,144)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 21,531          
Comprehensive income            
Foreign exchange translation adjustments (42)          
Cash-flow hedges 7          
Ending balance (in shares) at Jun. 30, 2024   32,959,588        
Ending balance at Jun. 30, 2024 746,597 $ 330 132,786 617,723 (63) (4,179)
Beginning balance (in shares) at Mar. 31, 2024   32,922,935        
Beginning balance at Mar. 31, 2024 713,157 $ 329 133,823 583,218 (61) (4,152)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 38,927     38,927    
Comprehensive income            
Foreign exchange translation adjustments (27)         (27)
Cash-flow hedges 0          
Other comprehensive income (loss), net of tax (27)         (27)
Issuance of common stock (in shares)   36,653        
Issuance of common stock 1 $ 1        
Purchase of treasury stock (3,362)   (3,360)   (2)  
Stock-based compensation 2,193   2,193      
Dividends (4,292)   130 (4,422)    
Ending balance (in shares) at Jun. 30, 2024   32,959,588        
Ending balance at Jun. 30, 2024 $ 746,597 $ 330 132,786 617,723 (63) (4,179)
Beginning balance (in shares) at Dec. 31, 2024 26,737,036 32,989,165        
Beginning balance at Dec. 31, 2024 $ 774,650 $ 330 136,872 631,541 (63) 5,970
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 23,344     23,344    
Comprehensive income            
Foreign exchange translation adjustments 11         11
Cash-flow hedges 7         7
Other comprehensive income (loss), net of tax 18         18
Issuance of common stock (in shares)   124,214        
Issuance of common stock 154 $ 1 153      
Purchase of treasury stock (1,486)   (1,486)      
Stock-based compensation 1,978   1,978      
Dividends (4,290)   160 (4,450)    
Ending balance (in shares) at Mar. 31, 2025   33,113,379        
Ending balance at Mar. 31, 2025 $ 794,368 $ 331 137,677 650,435 (63) 5,988
Beginning balance (in shares) at Dec. 31, 2024 26,737,036 32,989,165        
Beginning balance at Dec. 31, 2024 $ 774,650 $ 330 136,872 631,541 (63) 5,970
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 54,715          
Comprehensive income            
Foreign exchange translation adjustments 35          
Cash-flow hedges $ 7          
Ending balance (in shares) at Jun. 30, 2025 26,844,187 33,152,286        
Ending balance at Jun. 30, 2025 $ 823,732 $ 332 140,097 677,354 (63) 6,012
Beginning balance (in shares) at Mar. 31, 2025   33,113,379        
Beginning balance at Mar. 31, 2025 794,368 $ 331 137,677 650,435 (63) 5,988
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 31,371     31,371    
Comprehensive income            
Foreign exchange translation adjustments 24         24
Cash-flow hedges 0          
Other comprehensive income (loss), net of tax 24         24
Issuance of common stock (in shares)   38,907        
Issuance of common stock 1 $ 1        
Purchase of treasury stock (51)   (51)      
Stock-based compensation 2,309   2,309      
Dividends $ (4,290)   162 (4,452)    
Ending balance (in shares) at Jun. 30, 2025 26,844,187 33,152,286        
Ending balance at Jun. 30, 2025 $ 823,732 $ 332 $ 140,097 $ 677,354 $ (63) $ 6,012
v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - shares
3 Months Ended 86 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Statement of Stockholders' Equity [Abstract]          
Stock repurchased during period (in shares) 2,538 53,432 141,242 260,464 6,308,099
v3.25.2
Organization, Operations and Basis of Presentation
6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]  
Organization, Operations and Basis of Presentation Organization, Operations and Basis of Presentation
Description of Business
 
AdvanSix Inc. ("AdvanSix," the "Company," "we" or "our") is a diversified chemistry company that produces essential materials for our customers in a wide variety of end markets and applications that touch people’s lives. Our integrated value chain of our five U.S.-based manufacturing facilities plays a critical role in global supply chains and enables us to innovate and deliver essential products for our customers across building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives, electronics and other end markets. Guided by our core values of Safety, Integrity, Accountability and Respect, AdvanSix strives to deliver best-in-class customer experiences and differentiated products in the industries of nylon solutions, plant nutrients, and chemical intermediates.

Basis of Presentation

The Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of the Company's financial position as of June 30, 2025, and its results of operations for the three and six months ended June 30, 2025 and 2024 and cash flows for the six months ended June 30, 2025 and 2024. The year-end Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The results of operations of any interim period are not necessarily indicative of the results of operations to be expected for the full fiscal year. These financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. All intercompany transactions have been eliminated.
 
Certain prior period amounts have been reclassified for consistency with the current period presentation.

It is our practice to establish actual quarterly closing dates using a predetermined fiscal calendar, which requires our businesses to close their books on a Saturday in order to minimize the potentially disruptive effects of quarterly closing on our business processes. Historically, the effects of this practice have generally not been significant to reported results for any quarter and only existed within a reporting year. In the event that differences in actual closing dates are material to year-over-year comparisons of quarterly or year-to-date results, we will provide the appropriate disclosures. Our actual closing dates for the three and six months ended June 30, 2025 and 2024 were June 28, 2025 and June 29, 2024, respectively.

Liabilities to creditors to whom we have issued checks that remained outstanding at June 30, 2025 and December 31, 2024 aggregated to $6.0 million and $7.3 million, respectively. These were included in Cash and cash equivalents and Accounts payable in the Condensed Consolidated Balance Sheets.

The Company previously reported a business impact associated with the June 2019 fire that shut down the Philadelphia Energy Solutions refinery in Philadelphia, Pennsylvania. The Company actively pursued a business interruption claim and reached a final omnibus settlement in January 2025 which resulted in insurance settlement proceeds of approximately $26 million in the first quarter of 2025. The total aggregate insurance proceeds since the original claim submission are approximately $39 million. The proceeds have been recognized as a reduction to Costs of Goods Sold on the Condensed Consolidated Statements of Operations in the periods in which they were received.

On February 17, 2023, the Company's Board of Directors (the "Board") authorized a share repurchase program to repurchase shares of the Company's common stock. As of June 30, 2025, the Company has repurchased a total of 6,308,099 shares of common stock, including 1,062,643 shares withheld to cover tax withholding obligations in connection with the vesting of awards, for an aggregate of $194.0 million at a weighted average market price of $30.75 per share. As of June 30, 2025, approximately $62.0 million remained available for share repurchases under the current authorization. During the period July 1, 2025 through July 25, 2025, no additional shares were repurchased for tax withholding obligations or under the currently authorized repurchase program.

Repurchases may be made from time to time on the open market in accordance with Rule 10b-18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), including through the use of trading plans intended to qualify under Rule
10b5-1 of the Exchange Act. The size and timing of these repurchases will depend on pricing, market and economic conditions, legal and contractual requirements and other factors. The share repurchase program has no expiration date and may be modified, suspended or discontinued at any time. The par value of the shares repurchased is applied to Treasury stock and the excess of the purchase price over par value is applied to Additional paid-in capital.
v3.25.2
Recent Accounting Pronouncements
6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]  
Recent Accounting Pronouncements Recent Accounting Pronouncements
 
Recent Accounting Pronouncements – The Company considers the applicability and impact of all Accounting Standards Updates (“ASUs”) issued by the Financial Accounting Standards Board (“FASB”). ASUs not discussed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial position or results of operations.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in this ASU require disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. The amendments require that at each interim and annual reporting period an entity will: (1) disclose the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil-and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense categories listed in (a)-(e); (2) include certain amounts that are already required to be disclosed under current generally accepted accounting principles (GAAP) in the same disclosure as other disaggregation requirements; (3) disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively; and (4) disclose the total amount of selling expense and, in annual reporting periods, an entity's definition of selling expense. The guidance is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in this ASU should be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of this ASU or (2) retrospectively to any or all prior periods presented in the financial statements. The Company is evaluating the pronouncement and does not expect adoption to have a material impact on the Company's consolidated financial position or results of operations.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU require that public business entities, on an annual basis, disclose specific categories in the rate reconciliation and provide additional information for reconciling items that are equal to or greater than 5 percent of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate. The amendments also require that the Company disclose the following (net of refunds received): (1) the amount of income taxes paid disaggregated by federal (national), state, and foreign taxes and (2) the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid is equal to or greater than 5 percent of total income taxes paid. Additionally, the amendments in this update eliminate the requirement for all entities to disclose the nature and estimate of the range of the reasonably possible change in the unrecognized tax benefits balance in the next 12 months or to make a statement that an estimate of the range cannot be made, and remove the requirement to disclose the cumulative amount of each type of temporary difference when a deferred tax liability is not recognized because of the exceptions to comprehensive recognition of deferred taxes related to subsidiaries and corporate joint ventures. This pronouncement is effective for annual periods beginning after December 31, 2024 and the required disclosures will be adopted in the Company's Annual Report on Form 10-K for the year ended December 31, 2025.
v3.25.2
Revenues
6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Revenues Revenues
Revenue Recognition

AdvanSix serves around 400 customers annually, primarily in the United States, spanning a wide variety of industries worldwide. For the six months ended June 30, 2025 and 2024, the Company's ten largest customers accounted for approximately 39% and 38% of total sales, respectively.

We typically sell to customers under master service agreements, with primarily one-year terms, or by purchase orders. We have historically experienced low customer turnover and have long-standing customer relationships, which span decades. Our largest customer is Shaw Industries Group, Inc. (“Shaw”), a significant consumer of caprolactam and Nylon 6 resin, to whom we sell under a long-term agreement. For each of the three months ended June 30, 2025 and 2024, the Company's sales to Shaw were 9% of our total sales.
The Company's revenue by product line, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
20252024*20252024*
Nylon$79,503 20%$103,217 23%$167,871 21%$187,606 24%
Caprolactam66,424 16%81,303 18%133,856 17%142,779 18%
Plant Nutrients156,770 38%147,339 32%285,011 36%242,035 30%
Chemical Intermediates107,325 26%121,620 27%201,075 26%217,888 28%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* The Company transferred certain products between its Chemical Intermediates product line and its Plant Nutrients product line to align more closely with its current sales structure. Historical information has been reclassified to reflect these changes for all periods presented in the Consolidated Financial Statements. Total revenue amounts were not impacted for either period.

The Company's revenues by geographic area, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
United States$358,671 87%$401,859 89%$679,118 86%$686,447 87%
International *51,351 13%51,620 11%108,695 14%103,861 13%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* Predominantly Latin America and Canada
Deferred Income and Customer Advances
The Company defers revenues when cash payments are received in advance of our performance. Below is a roll-forward of Deferred income and customer advances for the six months ended June 30, 2025:
Opening balance January 1, 2025$37,538 
Additional cash advances— 
Less amounts recognized in revenues(35,680)
Ending balance June 30, 2025$1,858 
The Company expects to recognize as revenue the June 30, 2025 ending balance of Deferred income and customer advances within one year or less.
v3.25.2
Earnings Per Share
6 Months Ended
Jun. 30, 2025
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
 
The computation of basic and diluted earnings per share ("EPS") is based on Net income (loss) divided by the basic weighted average number of common shares outstanding and diluted weighted average number of common shares outstanding, respectively. The details of the basic and diluted EPS calculations for the three and six months ended June 30, 2025 and 2024 were as follows:
 
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Basic
Net income$31,371 $38,927 $54,715 $21,531 
Weighted average common shares outstanding26,896,037 26,839,429 26,867,252 26,859,044 
EPS – Basic$1.17 $1.45 $2.04 $0.80 
Diluted
Dilutive effect of equity awards and other stock-based holdings327,272 310,918 381,724 392,282 
Weighted average common shares outstanding27,223,309 27,150,347 27,248,976 27,251,326 
EPS – Diluted$1.15 $1.43 $2.01 $0.79 

Diluted EPS is computed based upon the weighted average number of common shares outstanding for the period plus the dilutive effect of common stock equivalents using the treasury stock method and the average market price of our common stock for the period.

The diluted EPS calculations exclude the effect of stock options when the options’ assumed proceeds exceed the average market price of the common shares during the period. The anti-dilutive common stock equivalents outstanding at the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Options and stock equivalents 1,005,749 1,057,349 948,963 1,127,661 

Dividend activity for the three and six months ended June 30, 2025 and 2024 was as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Cash dividends declared per share$0.16 $0.16 $0.32 $0.32 
Aggregate dividends paid to shareholders$4,290 $4,292 $8,580 $8,582 
v3.25.2
Accounts and Other Receivables - Net
6 Months Ended
Jun. 30, 2025
Receivables [Abstract]  
Accounts and Other Receivables - Net Accounts and Other Receivables – Net
June 30,
2025
December 31,
2024
Accounts receivables$155,701 $141,273 
Other4,343 4,982 
Total accounts and other receivables160,044 146,255 
Less – allowance for credit losses(342)(582)
Total accounts and other receivables – net$159,702 $145,673 
v3.25.2
Inventories
6 Months Ended
Jun. 30, 2025
Inventory Disclosure [Abstract]  
Inventories Inventories
June 30,
2025
December 31,
2024
Raw materials$103,110 $99,320 
Work in progress92,241 71,175 
Finished goods73,938 73,994 
Spares and other32,605 31,948 
301,894 276,437 
Reduction to LIFO cost basis(80,130)(64,051)
Total inventories$221,764 $212,386 

Substantially all of the Company’s inventories at June 30, 2025 and December 31, 2024 are valued at the lower of cost or market using the last-in, first-out (“LIFO”) method. However, approximately 6% was valued at average cost using the first-in, first-out (“FIFO”) method at June 30, 2025.

The excess of replacement cost over the carrying value of total inventories subject to LIFO was $75.9 million and $57.5 million at June 30, 2025 and December 31, 2024, respectively.
v3.25.2
Leases
6 Months Ended
Jun. 30, 2025
Leases [Abstract]  
Leases Leases
We determine if an arrangement is a lease at inception. Operating leases are included in Operating lease right-of-use assets ("ROU"), Operating lease liabilities – short-term, and Operating lease liabilities – long-term in our Condensed Consolidated Balance Sheets. Finance leases are included in Property, plant and equipment – net, Accounts payable, and Other liabilities in our Condensed Consolidated Balance Sheets.

The components of lease expense were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Finance lease cost:
Amortization of right-of-use asset$249 $264 $503 $508 
Interest on lease liabilities38 39 79 77 
Total finance lease cost287 303 582 585 
Operating lease cost13,999 10,797 27,077 22,483 
Short-term lease cost820 1,141 1,616 2,334 
Total lease cost$15,106 $12,241 $29,275 $25,402 

As of June 30, 2025, we have no additional operating or finance leases that have not yet commenced.
Leases Leases
We determine if an arrangement is a lease at inception. Operating leases are included in Operating lease right-of-use assets ("ROU"), Operating lease liabilities – short-term, and Operating lease liabilities – long-term in our Condensed Consolidated Balance Sheets. Finance leases are included in Property, plant and equipment – net, Accounts payable, and Other liabilities in our Condensed Consolidated Balance Sheets.

The components of lease expense were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Finance lease cost:
Amortization of right-of-use asset$249 $264 $503 $508 
Interest on lease liabilities38 39 79 77 
Total finance lease cost287 303 582 585 
Operating lease cost13,999 10,797 27,077 22,483 
Short-term lease cost820 1,141 1,616 2,334 
Total lease cost$15,106 $12,241 $29,275 $25,402 

As of June 30, 2025, we have no additional operating or finance leases that have not yet commenced.
v3.25.2
Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Intangible assets with finite lives acquired through a business combination are recorded at fair value, less accumulated amortization. Customer relationships and trade-names are amortized on a straight-line basis over their expected useful lives of 15 to 20 years and 5 years, respectively.

Goodwill

There was no change in the carrying amount of goodwill for the six months ended June 30, 2025.

Finite-Lived Intangible Assets

Intangible assets subject to amortization were as follows:
June 30, 2025December 31, 2024
Gross Carrying AmountAccumulated AmortizationNet Book ValueGross Carrying AmountAccumulated AmortizationNet Book Value
Customer relationships$36,820 $(6,619)$30,201 $36,820 $(5,666)$31,154 
Licenses18,451 (7,381)11,070 18,451 (6,919)11,532 
Trade names1,100 (752)348 1,100 (642)458 
Total$56,371 $(14,752)$41,619 $56,371 $(13,227)$43,144 

For each of the three months ended June 30, 2025 and June 30, 2024, the Company recorded amortization expense on intangible assets of $0.8 million. For each of the six months ended June 30, 2025 and June 30, 2024, the Company recorded amortization expense on intangible assets of $1.5 million.
v3.25.2
Commitments and Contingencies
6 Months Ended
Jun. 30, 2025
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Commitments and Contingencies
 
The Company is subject to a number of lawsuits, investigations and disputes, some of which may involve substantial amounts claimed, arising out of the conduct of the Company or other third-parties in the normal and ordinary course of business. A liability is recognized for any contingency that is probable of occurrence and reasonably estimable. The Company continually assesses the likelihood of adverse judgments or outcomes in these matters, as well as potential ranges of possible losses, based on an analysis of each matter with the assistance of legal counsel and, if applicable, other experts.
 
Given the uncertainty inherent in such lawsuits, investigations and disputes, the Company does not believe it is possible to develop estimates of reasonably possible loss in excess of current accruals for these matters. Considering the Company’s past experience and existing accruals, the Company does not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on the Company’s consolidated financial position or results of operations. Potential liabilities are subject to change due to new developments, changes in settlement strategy or the impact of evidentiary requirements, which could cause the Company to pay damage awards or settlements (or become subject to equitable remedies) that could have a material adverse effect on the Company’s consolidated results of operations, balance sheet and/or operating cash flows in the periods recognized or paid.

We assumed from Honeywell International Inc. ("Honeywell") all health, safety and environmental (“HSE”) liabilities and compliance obligations related to the past and future operations of our current business, as well as all HSE liabilities associated with our three manufacturing locations and the other locations used in our current operations, including any cleanup or other liabilities related to any contamination that may have occurred at such locations in the past. Honeywell retained all HSE liabilities related to former business locations or the operation of our former businesses. Although we have ongoing environmental remedial obligations at certain of our facilities, in the past three years, the associated remediation costs have not been material, and we do not expect our known remediation costs to have a material adverse effect on the Company's consolidated financial position or results of operations.
v3.25.2
Income Taxes
6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The provision for income taxes was $0.3 million and $13.1 million for the three months ended June 30, 2025 and 2024, respectively, resulting in an effective tax rate of 0.9% and 25.2%, respectively. The provision for income taxes was $5.9 million and $7.1 million for the six months ended June 30, 2025 and 2024, respectively, resulting in an effective tax rate of 9.7% and 24.9%, respectively.

The Company’s provision for income taxes in interim periods is computed by applying an estimated annual effective tax rate against Income before taxes for the period in addition to recording any tax effects of discrete items for the quarter. The Company’s effective tax rate for the three and six months ended June 30, 2025 differed from the U.S. federal statutory rate due to state taxes and executive compensation deduction limitations which generally increase the rate, offset by research tax credits that generally decrease the rate. Additionally, discrete tax adjustments recorded in the first and second quarter of 2025 related to Internal Revenue Code (IRC) Section 45Q tax credits of $1.8 million and $7.9 million, respectively, offset slightly by state tax legislation changes, resulted in a net 24.7% and 15.7% decrease in the rate for the three and six months ended June 30, 2025, respectively. The Company’s effective tax rate for the three and six months ended June 30, 2024 was higher than the U.S.
federal statutory rate, due to the impacts of state taxes and executive compensation deduction limitations which generally increase the tax rate, partially offset by tax credits which generally decrease the tax rate.
v3.25.2
Supplier Finance Program
6 Months Ended
Jun. 30, 2025
Payables and Accruals [Abstract]  
Supplier Finance Program Supplier Finance Programs
The Company has entered into a supply chain finance program with a financial intermediary providing participating suppliers the option to be paid by the intermediary earlier than the original invoice due date. AdvanSix’s responsibility is limited to making payments to the intermediary based upon payment terms negotiated with the suppliers, regardless of whether the intermediary pays the supplier in advance of the original due date. The Company’s payment terms with suppliers are consistent, regardless of whether a vendor participates in the supply chain finance program or not. All related agreements are terminable by either party upon at least 30 days’ notice.

The total amount due to the financial intermediary to settle supplier invoices under its supply chain finance program was approximately $19.8 million as of June 30, 2025 and approximately $19.2 million as of December 31, 2024. These amounts outstanding are included in Accounts payable.
v3.25.2
Segment Reporting
6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
Segment Related Information Segment Related Information
The Company has concluded that it is a single operating segment and a single reportable segment: chemical manufacturing. Its larger manufacturing sites are vertically integrated and leverage cross-plant resources, including centralized supply chain and procurement functions. This production process uses one key raw material, cumene, as the input to products produced for sale through the sales channels and end markets the Company serves. Production rates and output volumes are managed across locations to align with the Company’s overall operating plan. Additionally, the Company’s operating results, which are evaluated regularly to make decisions about resource allocation and performance assessment by the chief operating decision maker ("CODM"), our CEO and President, are on a consolidated basis.

The chemical manufacturing segment derives its revenues by innovating and delivering essential products in the industries of nylon solutions, plant nutrients, and chemical intermediates to its customers in a wide variety of end markets and applications, such as building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives and electronics.

The CODM’s performance assessment and resource allocation for the chemical manufacturing segment is based on net income which is also reported on the income statement as net income, the measure of segment assets which is also reported on the balance sheet as total assets, and capital expenditures which is also reported in management’s discussion and analysis.

The CODM uses net income generated from segment assets in deciding whether to reinvest profits into the segment or into other parts of the entity, such as for acquisitions or to pay dividends. The CODM also uses net income to monitor budget versus actual results. Monitoring budgeted versus actual results is used in assessing performance of the segment and in establishing management’s compensation. Lastly, the CODM uses capital expenditures to estimate the cash-generating potential and cash requirements of the segment.

Significant expense information reviewed by the CODM was as follows (in thousands):

Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
Revenue$410,022 $453,479 $787,813 $790,308 
Less:
Variable costs of goods sold *175,178 204,090 328,082 375,530 
Plant costs127,376 118,968 249,229 235,399 
Freight and distribution costs46,211 46,859 93,614 90,158 
Selling, general, and administrative expense25,416 24,431 48,825 48,024 
Other segment items **4,470 20,204 13,348 19,666 
Segment net income$31,371 $38,927 $54,715 $21,531 
*Variable costs of goods sold includes the raw material costs associated with volumes sold during the period as well as insurance settlement proceeds, when applicable.
**Other segment items include research and development expense, interest income and expense, capitalized interest, other non-operating expense, and income tax expense.
v3.25.2
Subsequent Events
6 Months Ended
Jun. 30, 2025
Subsequent Events [Abstract]  
Subsequent Events Subsequent Events
As announced on August 1, 2025, the Board declared a quarterly cash dividend of $0.16 per share on the Company's common stock, payable on August 26, 2025 to stockholders of record as of the close of business on August 12, 2025.
v3.25.2
Pay vs Performance Disclosure - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Pay vs Performance Disclosure            
Net income $ 31,371 $ 23,344 $ 38,927 $ (17,396) $ 54,715 $ 21,531
v3.25.2
Insider Trading Arrangements
3 Months Ended
Jun. 30, 2025
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.25.2
Recent Accounting Pronouncements (Policies)
6 Months Ended
Jun. 30, 2025
Accounting Policies [Abstract]  
Basis of Presentation
The Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, the accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, consisting of only normal recurring adjustments, necessary for a fair statement of the Company's financial position as of June 30, 2025, and its results of operations for the three and six months ended June 30, 2025 and 2024 and cash flows for the six months ended June 30, 2025 and 2024. The year-end Condensed Consolidated Balance Sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. The results of operations of any interim period are not necessarily indicative of the results of operations to be expected for the full fiscal year. These financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2024. All intercompany transactions have been eliminated.
 
Certain prior period amounts have been reclassified for consistency with the current period presentation.

It is our practice to establish actual quarterly closing dates using a predetermined fiscal calendar, which requires our businesses to close their books on a Saturday in order to minimize the potentially disruptive effects of quarterly closing on our business processes. Historically, the effects of this practice have generally not been significant to reported results for any quarter and only existed within a reporting year. In the event that differences in actual closing dates are material to year-over-year comparisons of quarterly or year-to-date results, we will provide the appropriate disclosures. Our actual closing dates for the three and six months ended June 30, 2025 and 2024 were June 28, 2025 and June 29, 2024, respectively.
Recent Accounting Pronouncements
Recent Accounting Pronouncements – The Company considers the applicability and impact of all Accounting Standards Updates (“ASUs”) issued by the Financial Accounting Standards Board (“FASB”). ASUs not discussed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial position or results of operations.

In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in this ASU require disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. The amendments require that at each interim and annual reporting period an entity will: (1) disclose the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil-and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense categories listed in (a)-(e); (2) include certain amounts that are already required to be disclosed under current generally accepted accounting principles (GAAP) in the same disclosure as other disaggregation requirements; (3) disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively; and (4) disclose the total amount of selling expense and, in annual reporting periods, an entity's definition of selling expense. The guidance is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in this ASU should be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of this ASU or (2) retrospectively to any or all prior periods presented in the financial statements. The Company is evaluating the pronouncement and does not expect adoption to have a material impact on the Company's consolidated financial position or results of operations.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU require that public business entities, on an annual basis, disclose specific categories in the rate reconciliation and provide additional information for reconciling items that are equal to or greater than 5 percent of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate. The amendments also require that the Company disclose the following (net of refunds received): (1) the amount of income taxes paid disaggregated by federal (national), state, and foreign taxes and (2) the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid is equal to or greater than 5 percent of total income taxes paid. Additionally, the amendments in this update eliminate the requirement for all entities to disclose the nature and estimate of the range of the reasonably possible change in the unrecognized tax benefits balance in the next 12 months or to make a statement that an estimate of the range cannot be made, and remove the requirement to disclose the cumulative amount of each type of temporary difference when a deferred tax liability is not recognized because of the exceptions to comprehensive recognition of deferred taxes related to subsidiaries and corporate joint ventures. This pronouncement is effective for annual periods beginning after December 31, 2024 and the required disclosures will be adopted in the Company's Annual Report on Form 10-K for the year ended December 31, 2025.
v3.25.2
Revenues (Tables)
6 Months Ended
Jun. 30, 2025
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregation of Revenue
The Company's revenue by product line, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
20252024*20252024*
Nylon$79,503 20%$103,217 23%$167,871 21%$187,606 24%
Caprolactam66,424 16%81,303 18%133,856 17%142,779 18%
Plant Nutrients156,770 38%147,339 32%285,011 36%242,035 30%
Chemical Intermediates107,325 26%121,620 27%201,075 26%217,888 28%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* The Company transferred certain products between its Chemical Intermediates product line and its Plant Nutrients product line to align more closely with its current sales structure. Historical information has been reclassified to reflect these changes for all periods presented in the Consolidated Financial Statements. Total revenue amounts were not impacted for either period.

The Company's revenues by geographic area, and related approximate percentage of total sales, for the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
United States$358,671 87%$401,859 89%$679,118 86%$686,447 87%
International *51,351 13%51,620 11%108,695 14%103,861 13%
Total$410,022 100%$453,479 100%$787,813 100%$790,308 100%
* Predominantly Latin America and Canada
Schedule of Deferred Income and Customer Advances Below is a roll-forward of Deferred income and customer advances for the six months ended June 30, 2025:
Opening balance January 1, 2025$37,538 
Additional cash advances— 
Less amounts recognized in revenues(35,680)
Ending balance June 30, 2025$1,858 
v3.25.2
Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2025
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share The details of the basic and diluted EPS calculations for the three and six months ended June 30, 2025 and 2024 were as follows:
 
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Basic
Net income$31,371 $38,927 $54,715 $21,531 
Weighted average common shares outstanding26,896,037 26,839,429 26,867,252 26,859,044 
EPS – Basic$1.17 $1.45 $2.04 $0.80 
Diluted
Dilutive effect of equity awards and other stock-based holdings327,272 310,918 381,724 392,282 
Weighted average common shares outstanding27,223,309 27,150,347 27,248,976 27,251,326 
EPS – Diluted$1.15 $1.43 $2.01 $0.79 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share The anti-dilutive common stock equivalents outstanding at the three and six months ended June 30, 2025 and 2024 were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Options and stock equivalents 1,005,749 1,057,349 948,963 1,127,661 
Schedule of Dividends Declared
Dividend activity for the three and six months ended June 30, 2025 and 2024 was as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Cash dividends declared per share$0.16 $0.16 $0.32 $0.32 
Aggregate dividends paid to shareholders$4,290 $4,292 $8,580 $8,582 
v3.25.2
Accounts and Other Receivables - Net (Tables)
6 Months Ended
Jun. 30, 2025
Receivables [Abstract]  
Schedule of Accounts and Other Receivables Net
June 30,
2025
December 31,
2024
Accounts receivables$155,701 $141,273 
Other4,343 4,982 
Total accounts and other receivables160,044 146,255 
Less – allowance for credit losses(342)(582)
Total accounts and other receivables – net$159,702 $145,673 
v3.25.2
Inventories (Tables)
6 Months Ended
Jun. 30, 2025
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
June 30,
2025
December 31,
2024
Raw materials$103,110 $99,320 
Work in progress92,241 71,175 
Finished goods73,938 73,994 
Spares and other32,605 31,948 
301,894 276,437 
Reduction to LIFO cost basis(80,130)(64,051)
Total inventories$221,764 $212,386 
v3.25.2
Leases (Tables)
6 Months Ended
Jun. 30, 2025
Leases [Abstract]  
Schedule of Components of Lease Expense
The components of lease expense were as follows:
Three Months Ended
June 30,
Six Months Ended
June 30,
2025202420252024
Finance lease cost:
Amortization of right-of-use asset$249 $264 $503 $508 
Interest on lease liabilities38 39 79 77 
Total finance lease cost287 303 582 585 
Operating lease cost13,999 10,797 27,077 22,483 
Short-term lease cost820 1,141 1,616 2,334 
Total lease cost$15,106 $12,241 $29,275 $25,402 
v3.25.2
Goodwill and Intangible Assets (Tables)
6 Months Ended
Jun. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
Intangible assets subject to amortization were as follows:
June 30, 2025December 31, 2024
Gross Carrying AmountAccumulated AmortizationNet Book ValueGross Carrying AmountAccumulated AmortizationNet Book Value
Customer relationships$36,820 $(6,619)$30,201 $36,820 $(5,666)$31,154 
Licenses18,451 (7,381)11,070 18,451 (6,919)11,532 
Trade names1,100 (752)348 1,100 (642)458 
Total$56,371 $(14,752)$41,619 $56,371 $(13,227)$43,144 
v3.25.2
Segment Reporting (Tables)
6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Significant expense information reviewed by the CODM was as follows (in thousands):

Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
Revenue$410,022 $453,479 $787,813 $790,308 
Less:
Variable costs of goods sold *175,178 204,090 328,082 375,530 
Plant costs127,376 118,968 249,229 235,399 
Freight and distribution costs46,211 46,859 93,614 90,158 
Selling, general, and administrative expense25,416 24,431 48,825 48,024 
Other segment items **4,470 20,204 13,348 19,666 
Segment net income$31,371 $38,927 $54,715 $21,531 
*Variable costs of goods sold includes the raw material costs associated with volumes sold during the period as well as insurance settlement proceeds, when applicable.
**Other segment items include research and development expense, interest income and expense, capitalized interest, other non-operating expense, and income tax expense.
v3.25.2
Organization, Operations and Basis of Presentation (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 69 Months Ended 86 Months Ended
Jul. 25, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Mar. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Equity, Class of Treasury Stock [Line Items]                
Checks outstanding   $ 6.0         $ 6.0 $ 7.3
Proceeds from insurance settlement   $ 26.0       $ 39.0    
Stock repurchased during period (in shares)   2,538 53,432 141,242 260,464   6,308,099  
Shares of common stock covering the tax withholding obligations (in shares)             1,062,643  
Stock repurchased during period, value             $ 194.0  
Treasury stock acquired, weighted average cost per share (in dollars per share)             $ 30.75  
Authorized amount remaining   $ 62.0         $ 62.0  
Subsequent Event                
Equity, Class of Treasury Stock [Line Items]                
Stock repurchased during period (in shares) 0              
v3.25.2
Revenues - Narrative (Details) - customer
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Concentration Risk [Line Items]        
Number of customers     400  
Length of contract terms     We typically sell to customers under master service agreements, with primarily one-year terms, or by purchase orders.  
10 Largest Customers | Customer Concentration Risk | Revenue from Contract with Customer        
Concentration Risk [Line Items]        
Concentration risk percentage     39.00% 38.00%
Shaw Industries Group Inc | Customer Concentration Risk | Revenue from Contract with Customer        
Concentration Risk [Line Items]        
Concentration risk percentage 9.00% 9.00%    
v3.25.2
Revenues - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation of Revenue [Line Items]        
Sales $ 410,022 $ 453,479 $ 787,813 $ 790,308
Revenue from Contract with Customer | Product Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 100.00% 100.00% 100.00% 100.00%
Revenue from Contract with Customer | Geographic Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 100.00% 100.00% 100.00% 100.00%
United States        
Disaggregation of Revenue [Line Items]        
Sales $ 358,671 $ 401,859 $ 679,118 $ 686,447
United States | Revenue from Contract with Customer | Geographic Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 87.00% 89.00% 86.00% 87.00%
International        
Disaggregation of Revenue [Line Items]        
Sales $ 51,351 $ 51,620 $ 108,695 $ 103,861
International | Revenue from Contract with Customer | Geographic Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 13.00% 11.00% 14.00% 13.00%
Nylon        
Disaggregation of Revenue [Line Items]        
Sales $ 79,503 $ 103,217 $ 167,871 $ 187,606
Nylon | Revenue from Contract with Customer | Product Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 20.00% 23.00% 21.00% 24.00%
Caprolactam        
Disaggregation of Revenue [Line Items]        
Sales $ 66,424 $ 81,303 $ 133,856 $ 142,779
Caprolactam | Revenue from Contract with Customer | Product Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 16.00% 18.00% 17.00% 18.00%
Plant Nutrients        
Disaggregation of Revenue [Line Items]        
Sales $ 156,770 $ 147,339 $ 285,011 $ 242,035
Plant Nutrients | Revenue from Contract with Customer | Product Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 38.00% 32.00% 36.00% 30.00%
Chemical Intermediates        
Disaggregation of Revenue [Line Items]        
Sales $ 107,325 $ 121,620 $ 201,075 $ 217,888
Chemical Intermediates | Revenue from Contract with Customer | Product Concentration Risk        
Disaggregation of Revenue [Line Items]        
Concentration risk percentage 26.00% 27.00% 26.00% 28.00%
v3.25.2
Revenues - Schedule of Deferred Income and Customer Advances (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2025
USD ($)
Change in Contract with Customer, Liability [Roll Forward]  
Opening balance $ 37,538
Additional cash advances 0
Less amounts recognized in revenues (35,680)
Ending balance $ 1,858
v3.25.2
Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Basic            
Net income $ 31,371 $ 23,344 $ 38,927 $ (17,396) $ 54,715 $ 21,531
Weighted average common shares outstanding (in shares) 26,896,037   26,839,429   26,867,252 26,859,044
EPS – Basic (in dollars per share) $ 1.17   $ 1.45   $ 2.04 $ 0.80
Diluted            
Dilutive effect of equity awards and other stock-based holdings (in shares) 327,272   310,918   381,724 392,282
Weighted average common shares outstanding (in shares) 27,223,309   27,150,347   27,248,976 27,251,326
EPS – Diluted (in dollars per share) $ 1.15   $ 1.43   $ 2.01 $ 0.79
v3.25.2
Earnings Per Share - Schedule of Antidilutive Common Stock Equivalents (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]        
Options and stock equivalents (in shares) 1,005,749 1,057,349 948,963 1,127,661
v3.25.2
Earnings Per Share - Schedule of Dividend Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Earnings Per Share [Abstract]        
Cash dividends declared per share (in dollars per share) $ 0.16 $ 0.16 $ 0.32 $ 0.32
Aggregate dividends paid to shareholders $ 4,290 $ 4,292 $ 8,580 $ 8,582
v3.25.2
Accounts and Other Receivables - Net (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Receivables [Abstract]    
Accounts receivables $ 155,701 $ 141,273
Other 4,343 4,982
Total accounts and other receivables 160,044 146,255
Less – allowance for credit losses (342) (582)
Total accounts and other receivables – net $ 159,702 $ 145,673
v3.25.2
Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Raw materials $ 103,110 $ 99,320
Work in progress 92,241 71,175
Finished goods 73,938 73,994
Spares and other 32,605 31,948
Inventory gross 301,894 276,437
Reduction to LIFO cost basis (80,130) (64,051)
Total inventories $ 221,764 212,386
Percentage of FIFO inventory 6.00%  
Excess of replacement or current costs over stated LIFO value $ 75,900 $ 57,500
v3.25.2
Leases - Schedule of Components of Lease Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Finance Lease Cost        
Amortization of right-of-use asset $ 249 $ 264 $ 503 $ 508
Interest on lease liabilities 38 39 79 77
Total finance lease cost 287 303 582 585
Operating lease cost 13,999 10,797 27,077 22,483
Short-term lease cost 820 1,141 1,616 2,334
Total lease cost $ 15,106 $ 12,241 $ 29,275 $ 25,402
v3.25.2
Leases - Narrative (Details)
Jun. 30, 2025
USD ($)
Operating Lease, Lease Not yet Commenced  
Lessee, Lease, Description [Line Items]  
Including lease not yet commenced $ 0
Financing Lease, Lease Not yet Commenced  
Lessee, Lease, Description [Line Items]  
Including lease not yet commenced $ 0
v3.25.2
Goodwill and Intangible Assets - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangible assets $ 0.8 $ 0.8 $ 1.5 $ 1.5
Customer relationships | U.S. Amines, Ltd. | Minimum        
Finite-Lived Intangible Assets [Line Items]        
Useful life 15 years   15 years  
Customer relationships | U.S. Amines, Ltd. | Maximum        
Finite-Lived Intangible Assets [Line Items]        
Useful life 20 years   20 years  
Trade names | U.S. Amines, Ltd.        
Finite-Lived Intangible Assets [Line Items]        
Useful life 5 years   5 years  
v3.25.2
Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 56,371 $ 56,371
Accumulated Amortization (14,752) (13,227)
Net Book Value 41,619 43,144
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 36,820 36,820
Accumulated Amortization (6,619) (5,666)
Net Book Value 30,201 31,154
Licenses    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 18,451 18,451
Accumulated Amortization (7,381) (6,919)
Net Book Value 11,070 11,532
Trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,100 1,100
Accumulated Amortization (752) (642)
Net Book Value $ 348 $ 458
v3.25.2
Commitments and Contingencies (Details)
6 Months Ended
Jun. 30, 2025
location
Commitments and Contingencies Disclosure [Abstract]  
Number of manufacturing locations 3
v3.25.2
Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income Tax Disclosure [Abstract]          
(Benefit) provision for income taxes $ 279   $ 13,145 $ 5,864 $ 7,124
Effective income tax rate 0.90%   25.20% 9.70% 24.90%
Effective income tax rate reconciliation, Section 45Q tax credit, amount $ 7,900 $ 1,800      
Effective income tax rate reconciliation, adjustment, percent 24.70%     15.70%  
v3.25.2
Supplier Finance Programs (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Payables and Accruals [Abstract]    
Period of termination 30 days  
Supplier finance program $ 19.8 $ 19.2
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] Accounts payable Accounts payable
v3.25.2
Segment Reporting (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]            
Sales $ 410,022   $ 453,479   $ 787,813 $ 790,308
Selling, general and administrative expenses 25,416   24,431   48,825 48,024
Net income 31,371 $ 23,344 38,927 $ (17,396) 54,715 21,531
Reportable Segment            
Segment Reporting Information [Line Items]            
Sales 410,022   453,479   787,813 790,308
Variable costs of goods sold 175,178   204,090   328,082 375,530
Plant costs 127,376   118,968   249,229 235,399
Freight and distribution costs 46,211   46,859   93,614 90,158
Selling, general and administrative expenses 25,416   24,431   48,825 48,024
Other segment items 4,470   20,204   13,348 19,666
Net income $ 31,371   $ 38,927   $ 54,715 $ 21,531
v3.25.2
Subsequent Events (Details) - $ / shares
3 Months Ended 6 Months Ended
Aug. 01, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Subsequent Event [Line Items]          
Cash dividends declared per share (in dollars per share)   $ 0.16 $ 0.16 $ 0.32 $ 0.32
Subsequent Event          
Subsequent Event [Line Items]          
Cash dividends declared per share (in dollars per share) $ 0.16