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Equipment and Leasehold Improvements (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Sep. 26, 2016
Jun. 30, 2015
Dec. 29, 2017
Dec. 30, 2016
Dec. 25, 2015
Property, Plant and Equipment [Line Items]          
Depreciation expense, various assets     $ 8,516 $ 7,082 $ 5,960
Depreciation expense, excluding capital leases     6,644 5,679 4,536
Interest expense     22,709 41,632 12,984
Capitalized interest expense     0 0 739
Cash consideration for parcel of land sold $ 550   0 550 16,187
Pre-tax gain on sale of parcel of land $ 113        
Sale-leaseback transaction   $ 14,645      
Construction-in-process          
Property, Plant and Equipment [Line Items]          
ERP, expected cost remaining     3,200    
Assets financed by capital leases          
Property, Plant and Equipment [Line Items]          
Assets financed by capital lease     530 506  
Depreciation expense, various assets     64 71 96
Software          
Property, Plant and Equipment [Line Items]          
Depreciation expense, various assets     $ 1,808 $ 1,332 $ 1,328