Intangible Assets (Changes in Carrying Amount) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012		Oct. 01, 2011
Intangible Assets [Roll Forward]
Intangible assets, beginning balance			$ 126,541	[1]
Amortization expense	(3,474)	(3,176)	(6,938)		(6,235)
Currency translation			(3)
Intangible assets, ending balance	119,600		119,600
Trademarks [Member]
Intangible Assets [Roll Forward]
Intangible assets, beginning balance			27,739
Currency translation			0
Intangible assets, ending balance	27,739		27,739
Non-competes and backlogs [Member]
Intangible Assets [Roll Forward]
Intangible assets, beginning balance			5,359
Amortization expense			(796)
Currency translation			(3)
Intangible assets, ending balance	4,560		4,560
Customer relationships [Member]
Intangible Assets [Roll Forward]
Intangible assets, beginning balance			93,443
Amortization expense			(6,142)
Currency translation			0
Intangible assets, ending balance	$ 87,301		$ 87,301

[1] Derived from audited financial statements