Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	$ 101,670	$ 55,127
Accumulated Amortization		25,484	21,551
Net Carrying Amount		76,186	33,576
Trademarks and patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	2,580	1,046
Accumulated Amortization		532	364
Net Carrying Amount		2,048	682
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	47,540	33,942
Accumulated Amortization		17,455	15,958
Net Carrying Amount		30,085	17,984
Covenant not-to-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	994	1,016
Accumulated Amortization		899	823
Net Carrying Amount		95	193
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	[1]	50,556	19,123
Accumulated Amortization		6,598	4,406
Net Carrying Amount		$ 43,958	$ 14,717

[1] Gross carrying amounts and accumulated amortization may differ from prior periods due to foreign exchange rate fluctuations.