Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 3,829	$ 2,842
Restricted cash	5,812	4,281
Accounts receivable	11,908	19,937
Inventory	31,077	23,075
Parts and supplies	39,663	38,877
Prepaid expenses	5,964	2,262
Assets held-for-sale	1,544	1,611
Total current assets	99,797	92,885
Property, plant and equipment:
Land and mineral rights	115,486	115,486
Buildings and equipment	529,818	537,131
Mine development	167,077	158,642
Finance lease assets	19,869	12,346
Total property, plant and equipment	832,250	823,605
Less - accumulated depreciation, depletion and amortization	(360,173)	(334,971)
Total property, plant and equipment, net	472,077	488,634
Investment in Sunrise Energy	2,071	2,811
Other assets	5,785	5,450
Total assets	579,730	589,780
Current liabilities:
Current portion of bank debt, net	24,095	24,438
Accounts payable and accrued liabilities	42,915	62,908
Current finance lease liabilities	6,248	3,933
Deferred revenue	57,293	23,062
Contract liability - power purchase agreement and capacity payment reduction	41,049	43,254
Total current liabilities	171,600	157,595
Long-term liabilities:
Bank debt, net	42,918	63,453
Convertible notes payable		10,000
Convertible notes payable - related party		9,000
Non-current finance lease liabilities	9,234	8,157
Deferred income taxes	5,846	9,235
Asset retirement obligations	15,746	14,538
Contract liability - power purchase agreement	13,456	47,425
Other	2,133	1,789
Total long-term liabilities	89,333	163,597
Total liabilities	260,933	321,192
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.10 par value, 10,000 shares authorized; none issued
Common stock, $.01 par value, 100,000 shares authorized; 42,599 and 34,052 issued and outstanding, as of September 30, 2024 and December 31, 2023, respectively	426	341
Additional paid-in capital	188,018	127,548
Retained earnings	130,353	140,699
Total stockholders' equity	318,797	268,588
Total liabilities and stockholders' equity	$ 579,730	$ 589,780