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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
ASSETS    
Cash and cash equivalents $ 184,994 $ 83,537
Accounts receivable:    
Trade, net 18,976 31,979
Other receivables, net 86 159
Inventory, net 104,881 112,191
Prepaid expenses and other current assets 4,158 5,312
Assets held for sale 0 59,154
Total current assets 313,095 292,332
Property, plant, equipment, and mineral properties, net 295,412 298,756
Water rights 2,311 2,311
Long-term parts inventory, net 30,222 31,506
Long-term investments 168 179
Other assets, net 8,712 7,095
Total Assets 649,920 632,179
LIABILITIES AND STOCKHOLDERS' EQUITY    
Accounts payable 10,539 9,656
Accrued liabilities 13,059 10,456
Accrued employee compensation and benefits 9,607 12,481
Other current liabilities 16,249 19,811
Liabilities held for sale 0 3,370
Total current liabilities 49,454 55,774
Asset retirement obligation, net of current portion 39,930 38,452
Operating lease liabilities 1,067 1,550
Finance lease liabilities 2,176 1,741
Deferred other income, long-term 42,105 43,233
Total Liabilities 134,732 140,750
Commitments and Contingencies
Common stock, $0.001 par value; 40,000,000 shares authorized; 13,207,226 and 13,131,663 shares outstanding at June 30, 2026, and December 31, 2025, respectively 14 14
Additional paid-in capital 675,061 674,297
Accumulated deficit (137,875) (160,870)
Less treasury stock, at cost (22,012) (22,012)
Total Stockholders' Equity 515,188 491,429
Total Liabilities and Stockholders' Equity $ 649,920 $ 632,179
Common Stock Shares Issued Not Disclosed false false