Goodwill and Intangible Assets Intangibles Table (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 179,556	$ 173,372
Finite-Lived Intangible Assets, Accumulated Amortization	56,246	48,186
Finite-Lived Intangible Assets, Net	123,310	125,186
Indefinite-lived Intangible Assets (Excluding Goodwill)	10,744	8,235
Intangible Assets, Gross (Excluding Goodwill)	190,300	181,607
INTANGIBLE ASSETS, net	$ 134,054	$ 133,421	[1]
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years	10 years
Finite-Lived Intangible Assets, Gross	$ 20,928	$ 19,399
Finite-Lived Intangible Assets, Accumulated Amortization	12,812	12,147
Finite-Lived Intangible Assets, Net	$ 8,116	$ 7,252
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years	9 years
Finite-Lived Intangible Assets, Gross	$ 10,002	$ 5,319
Finite-Lived Intangible Assets, Accumulated Amortization	5,319	5,272
Finite-Lived Intangible Assets, Net	$ 4,683	$ 47
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years	9 years
Finite-Lived Intangible Assets, Gross	$ 58,039	$ 57,916
Finite-Lived Intangible Assets, Accumulated Amortization	16,824	13,363
Finite-Lived Intangible Assets, Net	$ 41,215	$ 44,553
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years	4 years
Finite-Lived Intangible Assets, Gross	$ 425	$ 425
Finite-Lived Intangible Assets, Accumulated Amortization	425	425
Finite-Lived Intangible Assets, Net	$ 0	$ 0
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years	15 years
Finite-Lived Intangible Assets, Gross	$ 7,456	$ 7,456
Finite-Lived Intangible Assets, Accumulated Amortization	1,876	1,618
Finite-Lived Intangible Assets, Net	$ 5,580	$ 5,838
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	11 years	11 years
Finite-Lived Intangible Assets, Gross	$ 82,706	$ 82,857
Finite-Lived Intangible Assets, Accumulated Amortization	18,990	15,361
Finite-Lived Intangible Assets, Net	$ 63,716	$ 67,496

[1] December 31, 2018 balances were derived from audited consolidated financial statements.