Intangible Assets and Goodwill (Finite Lived Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	$ 22,460	$ 11,031
Finite Lived Intangible Assets Accumulated Amortization	5,562	2,363
Finite Lived Intangible Assets Net	16,898	8,668
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	7 years	6 years
Finite Lived Intangible Assets Gross	14,223	6,074
Finite Lived Intangible Assets Accumulated Amortization	3,338	1,392
Finite Lived Intangible Assets Net	10,885	4,682
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	12 years	14 years
Finite Lived Intangible Assets Gross	5,957	3,993
Finite Lived Intangible Assets Accumulated Amortization	935	392
Finite Lived Intangible Assets Net	5,022	3,601
Non-Compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	3 years	2 years
Finite Lived Intangible Assets Gross	1,912	596
Finite Lived Intangible Assets Accumulated Amortization	998	410
Finite Lived Intangible Assets Net	914	186
Trade name [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Estimated Useful Life	3 years	3 years
Finite Lived Intangible Assets Gross	368	368
Finite Lived Intangible Assets Accumulated Amortization	291	169
Finite Lived Intangible Assets Net	$ 77	$ 199