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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 5,081 $ 1,385
Accounts receivable, net 2,171 9,970
Prepaid expenses and other current assets 5,934 3,186
Total current assets 13,186 14,541
Property and equipment 250,374 238,064
Less accumulated depreciation (226,553) (225,085)
Property and equipment, net 23,821 12,979
Operating lease right-of-use assets 3,209 3,002
Intangibles, net 359 348
Total assets 40,575 30,870
Current liabilities:    
Accounts payable 5,698 3,381
Accrued liabilities:    
Payroll costs and other taxes 1,403 2,014
Other 1,052 830
Deferred revenue 3,709 1,570
Current maturities of notes payable and finance leases 3,598 1,010
Current maturities of operating lease liabilities 1,075 1,125
Total current liabilities 16,535 9,930
Long-term liabilities:    
Notes payable and finance leases, net of current maturities 6,545 1,512
Operating lease liabilities, net of current maturities 2,290 2,131
Deferred tax liabilities, net 16 16
Total long-term liabilities 8,851 3,659
Commitments and contingencies (Note 8)
Stockholders' equity:    
Preferred stock-par value $1.00 per share; 4,000,000 shares authorized, none outstanding
Common stock-par value $0.01 per share; 35,000,000 shares authorized, 31,047,801 and 30,983,437 shares issued and outstanding at September 30, 2025 and December 31, 2024, respectively 310 310
Additional paid-in capital 157,115 157,073
Accumulated deficit (140,129) (137,619)
Accumulated other comprehensive loss, net (2,107) (2,483)
Total stockholders' equity 15,189 17,281
Total liabilities and stockholders' equity $ 40,575 $ 30,870