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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 4,598 $ 6,072
Accounts receivable 37,698 23,231
Unbilled receivables 79 2,561
Inventory 25,584 26,823
Prepaid expenses and other current assets 3,210 3,217
Total current assets 71,169 61,904
Property, plant and equipment, net 251,384 255,092
Operating lease right-of-use assets 20,472 23,265
Intangible assets, net 5,678 5,876
Other assets 558 163
Total assets 349,261 346,300
Current liabilities:    
Accounts payable 9,935 16,041
Accrued expenses and other liabilities 15,402 11,024
Deferred revenue 2,375 1,154
Current portion of long-term debt 22,045 15,711
Current portion of operating lease liabilities 9,554 10,536
Total current liabilities 59,311 54,466
Long-term debt 2,445 3,449
Long-term operating lease liabilities 12,070 14,056
Deferred tax liabilities, net 12,697 12,101
Asset retirement obligations 20,172 19,923
Other non-current liabilities 38 38
Total liabilities 106,733 104,033
Commitments and contingencies (Note 12)
Stockholders’ equity    
Common stock, $0.001 par value, 350,000,000 shares authorized; 46,164,730 issued and 38,706,008 outstanding at March 31, 2024; 45,858,022 issued and 38,486,762 outstanding at December 31, 2023 39 39
Treasury stock, at cost, 7,458,722 and 7,371,260 shares at March 31, 2024 and December 31, 2023, respectively (14,419) (14,249)
Additional paid-in capital 182,646 181,973
Retained earnings 74,323 74,539
Accumulated other comprehensive loss (61) (35)
Total stockholders’ equity 242,528 242,267
Total liabilities and stockholders’ equity $ 349,261 $ 346,300