Fair Value Measurements and Fair Value of Financial Instruments - Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	$ 237,011	$ 61,494
Capital lease obligations	4,101	3,857
Other borrowings	272	417
Debt obligations	241,384	65,768
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	237,011	61,494
Capital lease obligations	4,101	3,857
Other borrowings	272	417
Debt obligations	$ 241,384	$ 65,768