Leases Lease, Cost (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 26, 2020	Dec. 28, 2019
Leases [Abstract]
Operating lease cost		$ 5,078	$ 3,528
Finance Lease, Right-of-Use Asset, Amortization	[1]	3,160	3,000
Finance Lease, Interest Expense	[1]	1,702	1,378
Finance Lease Cost	[1]	$ 4,862	$ 4,378

[1] (1) Includes leases classified as failed sale-leaseback transactions.