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Goodwill and Intangible Assets Intangibles Table (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 169,602 $ 167,044
Finite-Lived Intangible Assets, Accumulated Amortization 39,692 31,516
Finite-Lived Intangible Assets, Net 129,910 135,528
Indefinite-Lived Intangible Assets (Excluding Goodwill) 4,902 8,225
Intangible Assets, Gross (Excluding Goodwill) 174,504 175,269
INTANGIBLE ASSETS, net $ 134,812 $ 143,753 [1]
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 10 years 10 years
Finite-Lived Intangible Assets, Gross $ 18,606 $ 17,064
Finite-Lived Intangible Assets, Accumulated Amortization 11,537 10,970
Finite-Lived Intangible Assets, Net $ 7,069 $ 6,094
Customer Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 9 years 9 years
Finite-Lived Intangible Assets, Gross $ 5,319 $ 5,319
Finite-Lived Intangible Assets, Accumulated Amortization 5,082 4,892
Finite-Lived Intangible Assets, Net $ 237 $ 427
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 $ 55,979 $ 55,080
Finite-Lived Intangible Assets, Accumulated Amortization 9,929 6,562
Finite-Lived Intangible Assets, Net $ 46,050 $ 48,518
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 $ 7,310 $ 7,310
Finite-Lived Intangible Assets, Accumulated Amortization 1,340 1,096
Finite-Lived Intangible Assets, Net $ 5,970 $ 6,214
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 $ 81,963 $ 81,846
Finite-Lived Intangible Assets, Accumulated Amortization 11,379 7,571
Finite-Lived Intangible Assets, Net $ 70,584 $ 74,275
[1] December 31, 2017 balances were derived from audited consolidated financial statements.