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Fair Value Measurements and Fair Value of Financial Instruments - Carrying Value and Fair Value of Debt Obligations (Details) - USD ($)
$ in Thousands
Sep. 29, 2018
Dec. 30, 2017
Carrying Value [Member]    
Debt Obligations:    
Revolving credit facility $ 168,468 $ 237,011
Commercial real estate loan 20,584 0
Capital lease obligations 4,277 4,633
Other borrowings 286 436
Debt obligations 193,615 242,080
Fair Value [Member]    
Debt Obligations:    
Revolving credit facility 168,468 237,011
Commercial real estate loan 20,288 0
Capital lease obligations 4,277 4,633
Other borrowings 286 436
Debt obligations $ 193,319 $ 242,080