Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill (Components Intangible Assets) (Details)

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Intangible Assets and Goodwill (Components Intangible Assets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Original cost $ 15,141 $ 15,337
Accumulated amortization (10,480) (9,042)
Net identifiable intangible assets 4,661 6,295
Customer Relationships    
Finite-Lived Intangible Assets [Line Items]    
Original cost 4,860 4,928
Accumulated amortization (2,598) (2,194)
Net identifiable intangible assets 2,262 2,734
Developed Technology    
Finite-Lived Intangible Assets [Line Items]    
Original cost 8,100 8,225
Accumulated amortization (6,974) (6,043)
Net identifiable intangible assets 1,126 2,182
Trademarks / Trade-Names    
Finite-Lived Intangible Assets [Line Items]    
Original cost 2,181 2,184
Accumulated amortization (908) (805)
Net identifiable intangible assets $ 1,273 $ 1,379