Leases - Components of lease cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Operating lease cost:
Amortization of right-of-use assets	$ 9,978	$ 10,283	$ 9,764
Variable lease costs not included in liability	702	1,132	1,643
Total operating lease cost	10,680	11,415	11,407
Finance lease cost:
Amortization of right-of-use asset	1,590	1,493	1,185
Interest on lease liabilities	71	121	143
Total finance lease cost	$ 1,661	$ 1,614	$ 1,328