Leases - Estimated Undiscounted Future Lease Payments Under Non-Cancelable Operating Leases and Financing Leases with Reconciliation of Undiscounted Cash Flows (Detail) - USD ($) $ in Thousands	Apr. 20, 2019	Dec. 30, 2018
Operating lease liabilities
Remainder of 2019	$ 44,557
2020	66,939
2021	53,073
2022	43,190
2023	37,946
2024 and thereafter	225,383
Total minimum lease payments	471,088
Less: amount of lease payments representing interest	89,955
Present value of future minimum lease payments	381,133	$ 391,900
Current maturities of operating leases	51,362
Noncurrent operating lease obligations	329,771
Financing lease liabilities
Remainder of 2019	4,426
2020	8,146
2021	5,870
2022	4,641
2023	6,219
2024 and thereafter	2,088
Total minimum lease payments	31,390
Less: amount of lease payments representing interest	2,535
Present value of future minimum lease payments	28,855
Less: current obligations under leases	5,900
Long-term lease obligations	$ 22,955