Commitments and Contingencies - Summary of Future Minimum Lease Payments Including Renewal Options for all Noncancellable Operating Leases and Capital Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Jan. 01, 2017
Capital Leases, 2018	$ 10,706
Capital Leases, 2019	10,434
Capital Leases, 2020	10,613
Capital Leases, 2021	6,218
Capital Leases, 2022	2,697
Capital Leases, Thereafter	10,859
Total Capital Leases including interest	51,527
Less: Amounts representing interest	8,058
Present value of minimum lease principal payments	43,469
Less: Current portion of principal payment obligations under capital leases	8,221	$ 7,527
Long-term portion of principal payment obligations under capital leases	35,248	$ 41,194
Operating Leases, 2018	12,497
Operating Leases, 2019	11,872
Operating Leases, 2020	11,380
Operating Leases, 2021	10,879
Operating Leases, 2022	9,867
Operating Leases, Thereafter	34,717
Total Operating Leases	91,212
Total Capital And Operating Leases [Member]
Total future minimum payments due in 2018	23,203
Total future minimum payments due in 2019	22,306
Total future minimum payments due in 2020	21,993
Total future minimum payments due in 2021	17,097
Total future minimum payments due in 2022	12,564
Total future minimum payments due, in Thereafter	45,576
Total minimum lease payments including interest	$ 142,739