Business Acquisitions and Investments - Additional Information (Detail) - USD ($)			12 Months Ended
	Oct. 26, 2017	Jan. 06, 2017	Dec. 30, 2017	Jan. 27, 2017
Equity Method Investee [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage				33.00%
Equity method investment, cost				$ 10,000,000
Minimum [Member]
Business Acquisition [Line Items]
Cash flows discounted at rates	15.00%
Maximum [Member]
Business Acquisition [Line Items]
Cash flows discounted at rates	17.00%
MAS Automotive Distribution Inc [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of outstanding stock acquired	100.00%
Business acquisition, total purchase price consideration	$ 67,276,000
Business acquisition, cash received	3,300,000
Net sales, included in consolidated statement of operations			$ 7,000,000
Estimated contingent payments	7,982,000
Business combination maximum contingent consideration payment	$ 11,700,000
Business combination sales thresholds achievement maturity date	2020-12
Ingalls Engineering Company, Inc., [Member]
Business Acquisition [Line Items]
Business acquisition, total purchase price consideration		$ 4,800,000
Business acquisition date		Jan. 06, 2017
Business acquisition, portion of purchase consideration paid in cash		$ 3,100,000
Business acquisition, estimated contingent payments		1,700,000
Business acquisition of goodwill and other intangible assets		2,800,000
Business acquisition of other net assets		$ 2,000,000