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Income Taxes (Details) - USD ($)
 12 Months Ended
Jan. 01, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Loss before income taxes        
Domestic   $ (31,714,000) $ (41,162,000) $ (36,230,000)
Foreign   (4,866,000) (5,079,000) (3,804,000)
Loss before income tax   (36,580,000) (46,241,000) (40,034,000)
Income tax benefit        
Current federal benefit   40,000 215,000 280,000
Current state benefit (expense)   3,545,000 181,000 (571,000)
Current foreign benefit   2,492,000    
Deferred federal (expense) benefit   (51,000) 5,795,000 12,499,000
Deferred state benefit (expense)   697,000 (847,000) 860,000
Deferred foreign (expense) benefit   (1,409,000) 1,105,000 687,000
Total income tax benefit (expense)   $ 5,314,000 $ 6,449,000 $ 13,755,000
Reconciliation of income tax provision        
Federal income tax rate (as a percent) 21.00% 35.00% 35.00% 35.00%
Tax benefit computed at statutory rate of 35%   $ 12,803,000 $ 16,184,000 $ 14,012,000
Change in valuation allowance   (4,564,000) (10,200,000) (502,000)
State income tax benefit (expense), net of federal tax   2,757,000 (433,000) 423,000
Foreign losses   1,593,000 985,000 954,000
Transaction costs       (445,000)
Tax reform impact to deferred tax balances   (7,590,000)    
Other   315,000 (87,000) (687,000)
Total income tax benefit (expense)   5,314,000 6,449,000 13,755,000
Deferred tax assets:        
Federal tax net operating loss ("NOL") carryforward   21,014,000 32,746,000  
Foreign tax NOL carryforward   4,410,000 4,486,000  
Deferred revenue   626,000 462,000  
Restricted stock and restricted stock unit awards   192,000 318,000  
Workers' compensation   64,000 74,000  
State tax NOL carryforward   1,529,000 1,223,000  
Self-insurance   128,000 219,000  
Canadian start-up costs   156,000 275,000  
Alternative Minimum Tax ("AMT") credit carryforward   315,000 315,000  
Foreign tax credit     1,874,000  
Foreign deferred taxes   874,000 (535,000)  
Other comprehensive income   242,000 786,000  
Uncertain tax positions     512,000  
Other   80,000 271,000  
Gross deferred tax assets   29,630,000 43,026,000  
Less valuation allowances   (17,366,000) (13,602,000)  
Net deferred tax assets   12,264,000 29,424,000  
Deferred tax liabilities:        
Property and equipment   (12,914,000) (29,035,000)  
Total net deferred tax liabilities   (650,000)    
Total net deferred tax assets     389,000  
Roll Forward of the Company's unrecognized tax benefits:        
Balance at beginning of year   1,489,000 1,684,000  
Decrease in prior year tax positions     (14,000)  
Increase in current year tax positions     157,000  
Liability statute expiration   (1,489,000) (338,000)  
Balance at end of year     1,489,000 $ 1,684,000
Canada        
Deferred tax liabilities:        
Net operating loss carry forwards   16,963,000    
Foreign        
Deferred tax liabilities:        
Total net deferred tax liabilities   (874,000)    
Total net deferred tax assets     535,000  
Federal        
Deferred tax liabilities:        
Total net deferred tax liabilities     $ (146,000)  
Total net deferred tax assets   224,000    
Net operating loss carry forwards   100,065,000    
State        
Deferred tax liabilities:        
Net operating loss carry forwards   $ 1,935,000