Accrued Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Payables and Accruals [Abstract]
Compensation and benefits		$ 8,933		$ 8,933		$ 8,186
Provision for customer rebates, claims and allowances		8,850		8,850		9,300
Advanced customer deposits		5,299		5,299		6,013
Outstanding checks in excess of cash		2,611		2,611		3,141
Other (1)	[1]	5,325		5,325		4,212
Accrued expenses		31,018		31,018		$ 30,852
Settlement of class action litigation		$ 0	$ 1,514	$ 0	$ 1,514

[1] Includes an accrual of $1,514 for the settlement of a class action lawsuit (See Legal Proceedings section under Note 19).