v3.25.3
Business Segments - Schedule of Segment Reporting Information for Operating Results and Capital Expenditures (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]                
Net sales $ 163,549     $ 125,203     $ 474,973 $ 385,769
Less:                
Cost of materials and other 25,390     26,263     85,837 77,704
Direct operating expenses (exclusive of depreciation and amortization and turnaround expenses) 57,681     55,761     172,685 158,300
Depreciation and amortization 19,958     24,732     58,859 64,063
Selling, general and administrative expenses 9,171     7,447     25,094 21,065
Interest income (1,471)     (1,224)     (4,115) (2,938)
Net income 43,072 $ 38,768 $ 27,088 3,807 $ 26,219 $ 12,579 108,928 42,605
Nitrogen Fertilizer Segment                
Segment Reporting Information [Line Items]                
Net sales 163,549     125,203     474,973 385,769
Less:                
Feedstocks 13,264     11,014     45,899 41,559
Distribution costs 13,587     15,303     41,684 37,208
Change in inventory, net (1,461)     (54)     (1,746) (1,063)
Cost of materials and other 25,390     26,263     85,837 77,704
Direct operating expenses (exclusive of depreciation and amortization and turnaround expenses) 56,455     55,580     170,189 157,997
Turnaround expenses 1,226     181     2,496 303
Depreciation and amortization 19,958     24,732     58,859 64,063
Selling, general and administrative expenses 9,171     7,447     25,094 21,065
Interest expense 9,058     8,465     27,009 25,354
Other segment items 690     (48)     676 (384)
Net income 43,072     3,807     108,928 42,605
Capital expenditures $ 12,713     $ 9,699     $ 29,392 $ 19,205