Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 2,441	$ 3,009
Restricted cash	3,908	3,417
Accounts receivable	33,158	29,889
Inventory	49,411	49,796
Parts and supplies	31,221	28,295
Contact asset - coal purchase agreement	6,178	19,567
Prepaid expenses	3,377	4,546
Total current assets	129,694	138,519
Property, plant and equipment:
Land and mineral rights	115,506	115,595
Buildings and equipment	541,374	534,129
Mine development	145,200	140,108
Total property, plant and equipment	802,080	789,832
Less - accumulated depreciation, depletion and amortization	(325,860)	(309,370)
Total property, plant and equipment, net	476,220	480,462
Investment in Sunrise Energy	3,432	3,988
Other assets	7,281	7,585
Total Assets	616,627	630,554
Current liabilities:
Current portion of bank debt, net	32,272	33,031
Accounts payable and accrued liabilities	84,495	82,972
Deferred revenue	38,474	35,485
Contract liability - power purchase agreement and capacity payment reduction	54,038	88,114
Total current liabilities	209,279	239,602
Long-term liabilities:
Long-term bank debt, excluding current maturities, net	40,071	49,713
Convertible note payable	10,000	10,000
Convertible notes payable - related party	9,000	9,000
Deferred income taxes	7,526	4,606
Asset retirement obligations	17,340	17,254
Contact liability - power purchase agreement	84,825	84,096
Other	1,400	1,259
Total long-term liabilities	170,162	175,928
Total liabilities	379,441	415,530
Stockholders' equity:
Preferred stock, $.10 par value, 10,000 shares authorized; none issued and outstanding	0	0
Common stock, $.01 par value, 100,000 shares authorized; 33,137 and 32,983 issued and outstanding, at March 31, 2023 and December 31, 2022, respectively	332	330
Additional paid-in capital	118,897	118,788
Retained earnings	117,957	95,906
Total stockholders’ equity	237,186	215,024
Total liabilities and stockholders’ equity	$ 616,627	$ 630,554