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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS    
Operating revenues $ 37,480 $ 24,695
Operating costs:    
Operating expenses 37,910 29,016
General and administrative 13,785 12,046
Depreciation and amortization 9,795 12,863
Total cost and expenses 61,490 53,925
Loss from operations (24,010) (29,230)
Other income (expense):    
Interest income 316 220
Interest expense (31) (21)
Other income (expense), net 415 (86)
Gain from employee retention credit 2,966  
Loss before income tax (20,344) (29,117)
Income tax benefit (expense):    
Current 9 27
Deferred (116) (1)
Income tax benefit (107) 26
Net loss (20,451) (29,091)
Other comprehensive (loss) income:    
Net unrealized (loss) income on foreign exchange rate translation (1,063) 190
Comprehensive loss $ (21,514) $ (28,901)
Basic loss per share of common stock $ (0.86) $ (1.23)
Diluted loss per share of common stock $ (0.86) $ (1.23)
Weighted average equivalent common shares outstanding 23,782,796 23,570,455
Weighted average equivalent common shares outstanding - assuming dilution 23,782,796 23,570,455