v3.26.1
Business Segments - Schedule of Segment Reporting Information for Operating Results and Capital Expenditures (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]            
Net sales $ 202,194   $ 168,559   $ 382,242 $ 311,425
Less:            
Cost of materials and other 28,078   32,547   57,504 60,448
Direct operating expenses (exclusive of depreciation and amortization and turnaround expenses) 58,676   60,517   121,881 115,003
Depreciation and amortization 22,220   20,861   42,183 38,902
Selling, general and administrative expenses 7,536   8,034   16,565 15,922
Interest income (1,339)   (1,424)   (2,295) (2,644)
Net income 77,504 $ 49,913 38,768 $ 27,088 127,417 65,856
Nitrogen Fertilizer Segment            
Segment Reporting [Line Items]            
Net sales 202,194   168,559   382,242 311,425
Less:            
Feedstocks 13,222   16,106   31,153 32,635
Distribution costs 15,261   14,870   27,933 28,098
Other costs of materials (405)   1,571   (1,582) (285)
Cost of materials and other 28,078   32,547   57,504 60,448
Direct operating expenses (exclusive of depreciation and amortization and turnaround expenses) 57,566   59,625   119,800 113,733
Turnaround expenses 1,110   892   2,081 1,270
Depreciation and amortization 22,220   20,861   42,183 38,902
Selling, general and administrative expenses 7,536   8,034   16,565 15,922
Interest expense 8,736   9,004   17,540 17,951
Other segment items 783   252   1,447 (13)
Net income 77,504   38,768   127,417 65,856
Capital expenditures $ 17,333   $ 10,747   $ 31,084 $ 16,679