Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Total finance lease expense	$ 112	$ 40
Total operating lease expense	2,463	3,071
Total lease expense	2,575	3,111
Operating Costs
Total operating lease expense	633	1,214
SG&A Expense
Total finance lease expense	92	33
Total operating lease expense	1,830	1,857
Interest Expense, Net
Total finance lease expense	$ 20	$ 7