Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 212,603	$ 173,272
Accumulated Amortization	49,883	40,764
Total intangible Assets, Gross Carrying Amount	217,109	177,440
Net Carrying Amount	162,720	132,508
Indefinite lived intangible assets	4,506	4,168
Total intangible assets, Net Carrying Amount	167,226	136,676
Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,161	6,825
Accumulated Amortization	1,637	1,156
Net Carrying Amount	8,524	5,669
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	72,826	68,880
Accumulated Amortization	29,037	24,365
Net Carrying Amount	43,789	44,515
Covenant not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,729	1,419
Accumulated Amortization	1,004	932
Net Carrying Amount	725	487
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	127,887	96,148
Accumulated Amortization	18,205	14,311
Net Carrying Amount	$ 109,682	$ 81,837