Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 6,944	$ 5,565
Accounts receivable	27,188	31,695
Inventories	1,570	1,557
Prepaid expenses and other current assets	3,697	4,759
Total current assets	39,399	43,576
Property, plant and equipment, net	342,701	348,193
Other long-term assets, net	2,670	2,908
Total assets	384,770	394,677
Liabilities
Current portion of long-term debt	1,525	1,226
Accounts payable	18,800	22,990
Accrued liabilities	9,783	16,371
Total current liabilities	30,108	40,587
Long-term debt, net	170,378	154,549
Deferred income taxes, net	9,521	9,761
Other long-term liabilities	1,316	8,201
Total liabilities	211,323	213,098
Commitments and contingencies (Note 12)
Stockholders' equity
Common stock, $0.01 par value, 250,000,000 shares authorized; 15,369,536 and 14,523,124 shares issued, respectively, and 15,213,277 and 14,425,864 shares outstanding, respectively	152	144
Additional paid-in capital	623,174	622,169
Accumulated deficit	(445,780)	(436,794)
Treasury stock, at cost, 156,259 shares and 97,260 shares, respectively	(4,099)	(3,940)
Total stockholders' equity	173,447	181,579
Total liabilities and stockholders' equity	$ 384,770	$ 394,677