Fair Value Measurements and Fair Value of Financial Instruments - Carrying Value and Fair Value of Debt Obligations (Details) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 29, 2018
Carrying Value
Debt Obligations:
Revolving credit facility	$ 280,960	$ 141,106
Commercial real estate loan	19,688	20,475
Senior promissory notes	10,000	10,000
Debt obligations	310,648	171,581
Fair Value
Debt Obligations:
Revolving credit facility	280,960	141,106
Commercial real estate loan	21,055	20,575
Senior promissory notes	10,928	10,120
Debt obligations	$ 312,943	$ 171,801