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Income Taxes (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Loss before income taxes    
Domestic $ (25,931,000) $ (15,116,000)
Foreign (3,186,000) 1,944,000
Loss before income tax (29,117,000) (13,172,000)
Income tax (expense) benefit    
Current federal benefit 21,000 117,000
Current state expense 6,000 (131,000)
Deferred federal expense (159,000) (268,000)
Deferred state benefit 158,000 258,000
Income tax benefit (expense) $ 26,000 $ (24,000)
Reconciliation of income tax provision    
Federal income tax rate (as a percent) 21.00% 21.00%
Tax benefit computed at statutory rate of 21% $ 6,047,000 $ 2,766,000
Change in valuation allowance (6,632,000) (2,152,000)
State income tax benefit, net of federal tax 130,000 100,000
Foreign loss (income) 706,000 (536,000)
Other (225,000) (202,000)
Income tax benefit (expense) 26,000 (24,000)
Deferred tax assets:    
Federal tax net operating loss ("NOL") carryforward 30,649,000 26,754,000
Foreign tax NOL carryforward 6,947,000 6,244,000
State tax NOL carryforward 2,194,000 1,509,000
Other comprehensive income 235,000 273,000
Foreign deferred taxes 197,000 207,000
Right-of-use assets 125,000 124,000
Canadian start-up costs 90,000 104,000
Restricted stock and restricted stock unit awards 55,000 230,000
Other 48,000 51,000
Self-insurance 45,000 62,000
Workers' compensation 11,000 44,000
Gross deferred tax assets 40,596,000 35,602,000
Less valuation allowances (37,571,000) (30,396,000)
Net deferred tax assets 3,025,000 5,206,000
Deferred tax liabilities:    
Property and equipment (3,045,000) (5,225,000)
Net deferred tax liabilities (20,000) (19,000)
Unrecognized Tax Benefits 0 0
Canada    
Deferred tax liabilities:    
Net operating loss carry forwards 26,718,000  
Federal    
Deferred tax liabilities:    
Net deferred tax liabilities (20,000) $ (19,000)
Net operating loss carry forwards 145,949,000  
Tax benefits carry forward 30,649,000  
State    
Deferred tax liabilities:    
Tax benefits carry forward $ 2,194,000