Leases - Summary of Balances Related to Lease Portfolio within Condensed Consolidated Statement of Cash Flow (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2019		Sep. 30, 2018
Cash flows from operating activities impact:
Operating leases	$ 13,576
Interest payments on financing lease obligations	2,083	[1]	$ 2,600
Total cash flows from operating activities impact	15,659
Cash flows from financing activities impact:
Principal payments on financing lease obligations	6,441	[1]	$ 6,000
Total cash flows from financing activities impact	$ 6,441

[1] During the first nine months of 2018, the Company had interest payments on capital lease obligations of $2.6 million and principal payments on capital lease obligations of $6.0 million.