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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 6,446 | $ 2,842
Restricted cash | 4,282 | 4,281
Accounts receivable | 19,098 | 19,937
Inventory | 32,595 | 23,075
Parts and supplies | 39,459 | 38,877
Prepaid expenses | 2,027 | 2,262
Total current assets | 103,907 | 91,274
Property, plant and equipment: |  |
Land and mineral rights | 115,486 | 115,486
Buildings and equipment | 531,413 | 537,131
Mine development | 164,475 | 158,642
Finance lease right-of-use assets | 19,869 | 12,346
Total property, plant and equipment | 831,243 | 823,605
Less - accumulated depreciation, depletion and amortization | (349,462) | (334,971)
Total property, plant and equipment, net | 481,781 | 488,634
Investment in Sunrise Energy | 2,305 | 2,811
Other assets | 7,176 | 7,061
Total assets | 595,169 | 589,780
Current liabilities: |  |
Current portion of bank debt, net | 17,938 | 24,438
Accounts payable and accrued liabilities | 45,890 | 62,908
Current portion of lease financing | 6,204 | 3,933
Deferred revenue | 84,772 | 23,062
Contract liability - power purchase agreement and capacity payment reduction | 40,735 | 43,254
Total current liabilities | 195,539 | 157,595
Long-term liabilities: |  |
Bank debt, net | 24,734 | 63,453
Convertible notes payable | 0 | 10,000
Convertible notes payable - related party | 0 | 9,000
Long-term lease financing | 10,699 | 8,157
Deferred income taxes | 5,614 | 9,235
Asset retirement obligations | 15,335 | 14,538
Contract liability - power purchase agreement | 25,076 | 47,425
Other | 2,002 | 1,789
Total long-term liabilities | 83,460 | 163,597
Total liabilities | 278,999 | 321,192
Commitments and contingencies |  |
Stockholders' equity: |  |
Preferred stock, $.10 par value, 10,000 shares authorized; none issued | 0 | 0
Common stock, $.01 par value, 100,000 shares authorized; 42,599 and 34,052 issued and outstanding, as of June 30, 2024 and December 31, 2023, respectively | 426 | 341
Additional paid-in capital | 186,945 | 127,548
Retained earnings | 128,799 | 140,699
Total stockholders’ equity | 316,170 | 268,588
Total liabilities and stockholders’ equity | $ 595,169 | $ 589,780

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