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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 9,309 $ 5,510
Accounts receivable 24,015 35,746
Unbilled receivables 165 79
Inventory 25,955 20,185
Prepaid expenses and other current assets 712 6,593
Total current assets 60,156 68,113
Property, plant and equipment, net 255,644 258,843
Operating lease right-of-use assets 24,448 26,075
Intangible assets, net 6,074 6,669
Other assets 185 303
Total assets 346,507 360,003
Current liabilities:    
Accounts payable 10,439 14,435
Accrued expenses and other liabilities 15,461 13,430
Deferred revenue 2,018 6,959
Current portion of long-term debt 5,691 6,183
Current portion of operating lease liabilities 11,139 10,910
Total current liabilities 44,748 51,917
Long-term debt 6,895 9,807
Long-term operating lease liabilities 14,978 17,642
Long-term deferred tax liabilities, net 14,142 18,238
Asset retirement obligations 19,558 18,888
Other Liabilities, Noncurrent 40 40
Total liabilities 100,361 116,532
Commitments and contingencies (Note 14)
Stockholders’ equity    
Common stock, $0.001 par value, 350,000,000 shares authorized; 45,617,642 issued and 38,311,714 outstanding at September 30, 2023; 45,099,067 issued and 43,088,106 outstanding at December 31, 2022 38 43
Treasury stock, at cost, 7,305,928 and 2,010,961 shares at September 30, 2023 and December 31, 2022, respectively (14,124) (5,075)
Additional paid-in capital 180,934 178,386
Retained earnings 79,325 69,890
Accumulated other comprehensive income (27) 227
Total stockholders’ equity 246,146 243,471
Total liabilities and stockholders’ equity $ 346,507 $ 360,003