Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets Intangible Assets (Details)

v3.8.0.1
Goodwill and Intangible Assets Intangible Assets (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Gross Carrying Amount $ 21,970
Write-off Due to Sale (596)
Accumulated Amortization (14,246)
Net Carrying Amount 7,128
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2018 2,306
2019 2,306
2020 2,030
2021 486
Beyond 2021 $ 0
Developed Technology  
Finite-Lived Intangible Assets [Line Items]  
Estimated Useful Life (Years) 6 years
Gross Carrying Amount $ 11,630
Write-off Due to Sale 0
Accumulated Amortization (5,330)
Net Carrying Amount $ 6,300
Customer Relationships  
Finite-Lived Intangible Assets [Line Items]  
Estimated Useful Life (Years) 3 years
Gross Carrying Amount $ 5,400
Write-off Due to Sale (264)
Accumulated Amortization (5,136)
Net Carrying Amount $ 0
Trade Names  
Finite-Lived Intangible Assets [Line Items]  
Estimated Useful Life (Years) 5 years
Gross Carrying Amount $ 4,940
Write-off Due to Sale (332)
Accumulated Amortization (3,780)
Net Carrying Amount $ 828