Leases - Summary of Balances Related to Lease Portfolio within Consolidated Condensed Statement of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019		Apr. 01, 2018
Cost of Sales [Member]
Lessee Disclosure [Line Items]
Depreciation expense from capital leases	$ 353	[1]	$ 400
Selling, Delivery and Administrative Expenses [Member]
Lessee Disclosure [Line Items]
Depreciation expense from capital leases	1,139	[1]	1,100
Interest Expense, Net [Member]
Lessee Disclosure [Line Items]
Interest payments on capital lease obligations	$ 702	[2]	$ 900

[1] During the first quarter of 2018, the Company had depreciation expense from capital leases of $0.4 million and $1.1 million in cost of sales and SD&A expenses, respectively.

[2] During the first quarter of 2018, the Company had interest payments on capital lease obligations of $0.9 million.