Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 10,070	$ 7,232
Restricted cash	5,302	4,921
Accounts receivable	13,989	15,438
Inventory	42,534	36,685
Parts and supplies	45,854	39,104
Prepaid expenses	5,638	1,478
Total current assets	123,387	104,858
Property, plant and equipment:
Land and mineral rights	69,952	70,307
Buildings and equipment	421,037	402,649
Mine development	102,302	92,458
Construction work in process	39,671	27,208
Finance lease right-of-use assets	12,591	13,034
Total property, plant and equipment	645,553	605,656
Less - accumulated depreciation, depletion and amortization	(367,775)	(347,952)
Total property, plant and equipment, net	277,778	257,704
Equity method investments	2,647	2,607
Other assets	4,241	3,951
Total assets	408,053	369,120
Current liabilities:
Current portion of bank debt, net		4,095
Accounts payable and accrued liabilities	41,848	44,298
Current portion of lease financing	7,411	6,912
Contract liabilities - current	103,343	97,598
Total current liabilities	152,602	152,903
Long-term liabilities:
Bank debt, net	29,678	37,394
Long-term lease financing	1,338	8,749
Deferred income taxes	1,833
Asset retirement obligations	15,241	14,957
Contract liabilities - long-term	45,714	49,121
Other	1,814	1,711
Total long-term liabilities	95,618	111,932
Total liabilities	248,220	264,835
Commitments and contingencies (Note 22)
Stockholders' equity:
Preferred stock, $.10 par value, 10,000 shares authorized; none issued
Common stock, $.01 par value, 100,000 shares authorized; 43,817 and 42,621 issued and outstanding, as of December 31, 2025 and December 31, 2024, respectively	438	426
Additional paid-in capital	202,963	189,298
Retained deficit	(43,568)	(85,439)
Total stockholders' equity	159,833	104,285
Total liabilities and stockholders' equity	$ 408,053	$ 369,120