Goodwill and Related Intangible Assets (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	$ 112,870	$ 128,939
Total acquired intangible assets, Gross Carrying Amount	163,528	179,477
Accumulated Amortization, Finite-lived intangible assets	41,879	56,464
Total acquired intangible assets, Accumulated Amortization	41,879	56,464
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	5,842	5,861
Accumulated Amortization, Finite-lived intangible assets	1,970	1,884
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	25,665	28,072
Accumulated Amortization, Finite-lived intangible assets	8,662	10,656
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	79,714	85,419
Accumulated Amortization, Finite-lived intangible assets	30,855	35,673
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	1,649	3,107
Accumulated Amortization, Finite-lived intangible assets	392	1,771
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Finite-lived intangible assets	0	6,480
Accumulated Amortization, Finite-lived intangible assets	0	6,480
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, Indefinite-lived intangible assets	50,658	50,538
Accumulated Amortization, Indefinite-lived intangible assets	$ 0	$ 0
Minimum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	2 years
Minimum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	5 years
Minimum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	4 years
Minimum | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Life	6 months
Maximum | Trademarks
Finite-Lived Intangible Assets [Line Items]
Estimated Life	15 years
Maximum | Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Estimated Life	20 years
Maximum | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Life	17 years
Maximum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated Life	10 years
Maximum | Backlog
Finite-Lived Intangible Assets [Line Items]
Estimated Life	2 years