v3.26.3
BUSINESS SEGMENTS (Cost of Goods Sold) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Mineral [Member]        
Segment Reporting [Line Items]        
Labor and benefits $ 10,634 $ 10,469 $ 45,663 $ 46,353
Maintenance 2,570 3,022 12,076 12,860
Utilities and fuel 1,923 2,283 8,568 9,492
Operating supplies 2,926 2,858 11,433 12,334
Depreciation 6,632 6,537 24,612 24,581
Other [1] 6,118 6,092 23,738 25,162
Total cost of goods sold 30,803 31,261 126,090 130,782
Operating Segments [Member] | Potash [Member]        
Segment Reporting [Line Items]        
Total cost of goods sold 22,685 21,050 78,913 76,531
Operating Segments [Member] | Trio [Member]        
Segment Reporting [Line Items]        
Total cost of goods sold 8,051 9,255 46,777 51,541
Operating Segments [Member] | Corporate Segment and Other Operating Segment        
Segment Reporting [Line Items]        
Total cost of goods sold 67 956 400 2,710
Operating Segments [Member] | Mineral [Member] | Potash [Member]        
Segment Reporting [Line Items]        
Labor and benefits 7,176 6,681 25,824 24,359
Maintenance 1,641 1,710 5,939 6,007
Utilities and fuel 1,550 1,669 5,881 6,171
Operating supplies 1,809 1,478 4,774 4,701
Depreciation 6,221 5,587 22,360 20,738
Other [1] 4,288 3,925 14,135 14,555
Total cost of goods sold 22,685 21,050 78,913 76,531
Operating Segments [Member] | Mineral [Member] | Trio [Member]        
Segment Reporting [Line Items]        
Labor and benefits 3,458 3,788 19,839 21,994
Maintenance 929 1,312 6,137 6,853
Utilities and fuel 373 614 2,687 3,321
Operating supplies 1,117 1,380 6,659 7,633
Depreciation 397 392 2,179 2,456
Other [1] 1,777 1,769 9,276 9,284
Total cost of goods sold 8,051 9,255 46,777 51,541
Operating Segments [Member] | Mineral [Member] | Corporate Segment and Other Operating Segment        
Segment Reporting [Line Items]        
Labor and benefits 0 0 0 0
Maintenance 0 0 0 0
Utilities and fuel 0 0 0 0
Operating supplies 0 0 0 0
Depreciation 14 558 73 1,387
Other [1] 53 398 327 1,323
Total cost of goods sold $ 67 $ 956 $ 400 $ 2,710
[1] Other expense includes property taxes, insurance, royalties, and other miscellaneous expenses