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