Leases - Summary of Balances Related to Lease Portfolio within Condensed Consolidated Statement of Cash Flow (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019
Cash flows from operating activities impact:
Operating leases	$ 8,633	$ 8,515
Interest payments on financing lease obligations	507	1,417
Total cash flows from operating activities impact	9,140	9,932
Cash flows from financing activities impact:
Principal payments on financing lease obligations	3,001	4,261
Total cash flows from financing activities impact	$ 3,001	$ 4,261