Business Acquisition (Schedule of Identifiable Intangible Assets Acquired as Part of Business Combination) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 114,500
Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years
Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	88,000
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	23,000
Customer Relationships [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Customer Relationships [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years
Order Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 3,500
Estimated useful life	1 year