Acquisitions (Schedule of Amortizing Intangible Assets Acquired) (Details) (Big Country [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	May 01, 2013	May 02, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		$ 10.7
Finite-lived intangible asset, useful life	5 years
Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		1.9
Finite-lived intangible asset, useful life	1 year
Non-compete Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		1.8
Finite-lived intangible asset, useful life	8 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets		$ 7.0
Finite-lived intangible asset, useful life	6 years