Leases - Components of Lease Cost for Finance Leases and Operating Leases (Detail) $ in Thousands	9 Months Ended
	Sep. 25, 2021 USD ($)
Finance leases:
Amortization of right-of-use assets	$ 15,967
Interest on lease liability	2,023
Total finance lease cost	17,990
Operating leases:
Lease cost	2,623
Sublease income	(3,720)
Total net operating lease income	(1,097)
Total net lease cost	$ 16,893