Supplemental Disclosure of Cash Flow Information (Liabilities On Acquisitions Assumed) (Details) - USD ($)	12 Months Ended
	Mar. 26, 2016	Mar. 28, 2015	Mar. 29, 2014
Fiscal 2016 Acquisitions And Fiscal 2015 Acquisition Measurment Period Adjustments [Member]
Business Acquisition [Line Items]
Fair value of assets acquired	$ 35,335,000
Goodwill	50,573,000
Cash paid, net of cash acquired	(49,018,000)
Amounts payable to seller	(1,626,000)
Liabilities assumed	$ 35,264,000
Fiscal 2015 Acquisitions [Member]
Business Acquisition [Line Items]
Fair value of assets acquired		$ 62,184,000
Goodwill		79,316,000
Gain on bargain purchase		(386,000)
Cash paid, net of cash acquired		(84,403,000)
Amounts payable to seller		(3,507,000)
Liabilities assumed		$ 53,204,000
Fiscal 2014 Acquisitions [Member]
Business Acquisition [Line Items]
Fair value of assets acquired			$ 14,330,000
Goodwill			17,673,000
Gain on bargain purchase			(217,000)
Cash paid, net of cash acquired			(27,482,000)
Liabilities assumed			$ 4,304,000