Supplemental Disclosure of Cash Flow Information (Details) (USD $)	6 Months Ended
	Sep. 29, 2012	Sep. 24, 2011
Supplemental Cash Flow [Line Items]
Acquisitions, net of cash acquired	$ (57,488,000)	$ (32,533,000)
Property, plant and equipment, purchase price adjustment		1,331,000
Deferred income tax asset, purchase price adjustment		381,000
Goodwill, purchase price adjustment		325,000
Intangible assets, purchase price adjustment		297,000
Long-term debt, purchase price adjustment		2,334,000
Current liabilities, exercise of stock options	601,000	5,485,000
Common Stock, exercise of stock options	1,000	6,000
Paid in capital, exercise of stock options	1,060,000	8,685,000
Treasury Stock, exercise of stock options	1,662,000	14,176,000
Accounting for income tax benefits related to the exercise of stock options	1,247,000	4,803,000
Fiscal Year 2012 Acquisitions
Supplemental Cash Flow [Line Items]
Fair value of assets acquired		5,739,000
Goodwill acquired		27,589,000
Acquisitions, net of cash acquired		(32,533,000)
Liabilities assumed		795,000
Fiscal Year 2013 Acquisitions
Supplemental Cash Flow [Line Items]
Fair value of assets acquired	14,128,000
Goodwill acquired	45,158,000
Acquisitions, net of cash acquired	(57,488,000)
Liabilities assumed	$ 1,798,000