Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 4,140	$ 12,279
Accounts receivable, net of allowance of zero and $0.5 million, respectively	22,211	10,023
Inventories	1,171	1,038
Prepaid expenses and other current assets	4,787	4,102
Total current assets	32,309	27,442
Property, plant and equipment, net	362,346	382,239
Other long-term assets, net	2,449	3,528
Total assets	397,104	413,209
Liabilities
Current portion of long-term debt	4,464	7,637
Accounts payable	15,304	4,072
Accrued liabilities	15,617	10,723
Current portion of merger consideration payable to an affiliate	2,902
Total current liabilities	38,287	22,432
Long-term debt	141,740	137,633
Merger consideration payable to an affiliate		2,902
Deferred income taxes, net	19,037	505
Other long-term liabilities	2,811	2,704
Total liabilities	201,875	166,176
Commitments and contingencies (Note 13)
Stockholders' equity
Common stock, $0.01 par value, 50,000,000 shares authorized; 10,287,931 and 6,254,396 shares issued, respectively, and 10,206,085 and 6,175,818 shares outstanding, respectively	102	62
Additional paid-in capital	532,826	517,948
Accumulated deficit	(333,776)	(267,064)
Treasury stock, at cost, 81,846 shares and 78,578 shares, respectively	(3,923)	(3,913)
Total stockholders' equity	195,229	247,033
Total liabilities and stockholders' equity	$ 397,104	$ 413,209