Annual report pursuant to Section 13 and 15(d)

Debt - Deferred Debt Issuance Cost And Original Issue Discount (Details)

v3.8.0.1
Debt - Deferred Debt Issuance Cost And Original Issue Discount (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2017
Dec. 29, 2016
Dec. 31, 2015
Debt Instrument [Line Items]      
Amortization expense $ 1,205 $ 954 $ 692
ABL Facility      
Debt Instrument [Line Items]      
Deferred debt issuance costs 1,005 1,274  
Term Loan Facility      
Debt Instrument [Line Items]      
Deferred debt issuance costs $ 4,438    
Prior Term Loan Facility And GCI Facility      
Debt Instrument [Line Items]      
Deferred debt issuance costs   $ 9,257