Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 26, 2020		Dec. 28, 2019
Payables and Accruals [Abstract]
Compensation and benefits (1)	$ 9,159	[1]	$ 8,804
Provision for customer rebates, claims and allowances	8,006		7,682
Advanced customer deposits	3,139		4,685
Outstanding checks in excess of cash	2,094		0
Other	3,567		4,247
Accrued expenses	25,965		$ 25,418
Letters of Credit Outstanding, Amount	$ 2,452

[1] Includes a liability related to the Company's self-insured Workers' Compensation program.  This program is collateralized by letters of credit in the aggregate amount of $2,452.