Leases - Weighted Average (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2021	Dec. 27, 2020
Leases [Abstract]
Operating lease liabilities arising from obtaining right-of-use assets	$ 3.8	$ 10.2
Finance lease liabilities arising from obtaining right-of-use assets	$ 5.8	$ 1.1
Weighted-average remaining lease term (in years):
Operating leases	4 years 6 months 25 days	5 years 5 months 15 days
Finance leases	16 years 1 month 20 days	17 years 8 months 4 days
Weighted-average discount rate:
Operating leases	6.50%	6.50%
Finance leases	6.51%	6.52%