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Income Taxes (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Loss before income taxes    
Domestic $ (15,116,000) $ (14,097,000)
Foreign 1,944,000 (1,355,000)
Loss before income tax (13,172,000) (15,452,000)
Income tax (expense) benefit    
Current federal benefit 117,000 285,000
Current state expense (131,000) (69,000)
Deferred federal expense (268,000) (251,000)
Deferred state benefit 258,000 127,000
Deferred foreign benefit   147,000
Income tax (expense) benefit $ (24,000) $ 239,000
Reconciliation of income tax provision    
Federal income tax rate (as a percent) 21.00% 21.00%
Tax benefit computed at statutory rate of 21% $ 2,766,000 $ 3,245,000
Change in valuation allowance (2,152,000) (5,744,000)
State income tax benefit, net of federal tax 100,000 46,000
Foreign (income) loss (536,000) 2,827,000
Other (202,000) (135,000)
Income tax (expense) benefit (24,000) 239,000
Deferred tax assets:    
Federal tax net operating loss ("NOL") carryforward 26,754,000 25,921,000
Foreign tax NOL carryforward 6,244,000 6,418,000
State tax NOL carryforward 1,509,000 1,692,000
Other comprehensive income 273,000 379,000
Restricted stock and restricted stock unit awards 230,000 316,000
Foreign deferred taxes 207,000 242,000
Right-of-use assets 124,000 193,000
Canadian start-up costs 104,000 122,000
Self-insurance 62,000 106,000
Workers' compensation 44,000 96,000
Deferred revenue   351,000
Alternative Minimum Tax ("AMT") credit carryforward   79,000
Other 51,000 90,000
Gross deferred tax assets 35,602,000 36,005,000
Less valuation allowances (30,396,000) (28,299,000)
Net deferred tax assets 5,206,000 7,706,000
Deferred tax liabilities:    
Property and equipment (5,225,000) (7,649,000)
Net deferred tax (liabilities) assets   57,000
Net deferred tax (liabilities) assets (19,000)  
Unrecognized Tax Benefits 0 0
Canada    
Deferred tax liabilities:    
Net operating loss carry forwards 24,016,000  
Federal    
Deferred tax liabilities:    
Net deferred tax (liabilities) assets   $ 57,000
Net deferred tax (liabilities) assets (19,000)  
Net operating loss carry forwards 127,399,000  
Tax benefits carry forward 26,754,000  
State    
Deferred tax liabilities:    
Tax benefits carry forward $ 1,509,000