Business Combinations (Details) $ in Thousands			3 Months Ended	6 Months Ended
	Sep. 18, 2015 USD ($)	Oct. 20, 2014 USD ($)	Dec. 28, 2014 USD ($)	Sep. 27, 2015 USD ($)	Sep. 28, 2014 USD ($)
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 4,450	$ 0
Davis Supply Inc. [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 4,450
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period	$ 5,000
Preliminary Value of Goodwill and Intangible Assets Acquired				$ 4,000
Number of operating locations acquired	1
The Dumont Company, Inc.
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 10,100
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period		$ 14,000
Number of operating locations acquired		7
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable			$ 1,358
Inventory			859
Other assets			159
Property, plant, and equipment			702
Intangible assets			3,509
Current liabilities			877
Net assets acquired			5,710
Goodwill			4,358
Total purchase price			10,068
Customer Relationships [Member] | The Dumont Company, Inc.
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		20 years
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets			2,810
Trade Names [Member] | The Dumont Company, Inc.
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		4 years
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets			$ 699