Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 7,000	$ 2,546
Restricted cash	3,483	3,283
Accounts receivable	16,744	13,584
Inventory	13,734	7,699
Parts and supplies	14,990	10,015
Prepaid expenses	2,220	2,112
Total current assets	58,171	39,239
Property, plant and equipment:
Land and mineral rights	115,704	115,837
Buildings and equipment	363,903	342,782
Mine development	131,820	112,575
Total property, plant and equipment	611,427	571,194
Less - accumulated depreciation, depletion and amortization	(298,116)	(268,370)
Total property, plant and equipment, net	313,311	302,824
Investment in Sunrise Energy	4,051	3,545
Other assets	7,828	8,372
Total Assets	383,361	353,980
Current liabilities:
Current maturities, long-term bank debt, net	110,158	23,098
Accounts payable and accrued liabilities	52,428	41,528
Total current liabilities	162,586	64,626
Long-term liabilities:
Long-term bank debt, excluding current maturities, net	0	84,667
Convertible note payable	10,000	0
Convertible notes payable - related party	9,000	0
Deferred income taxes	3,690	2,850
Asset retirement obligations	12,393	14,025
Other	1,720	1,577
Total long-term liabilities	36,803	103,119
Total liabilities	199,389	167,745
Commitments and contingencies
Redeemable noncontrolling interests	0	4,000
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; 32,983 and 30,785 issued and outstanding, at September 30, 2022 and December 31, 2021, respectively	330	308
Additional paid-in capital	117,749	104,126
Retained earnings	65,893	77,801
Total stockholders’ equity	183,972	182,235
Total liabilities, redeemable noncontrolling interests, and stockholders’ equity	$ 383,361	$ 353,980