Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 30, 2017
Payables and Accruals [Abstract]
Compensation and benefits	$ 8,817	$ 9,276
Provision for customer rebates, claims and allowances	8,063	9,820
Advanced customer deposits	5,296	5,717
Outstanding checks in excess of cash	2,641	379
Other	6,259	6,168
Accrued expenses	$ 31,076	$ 31,360