Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Narrative (Details)

v3.10.0.1
Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2015
Business Acquisition [Line Items]      
Assets acquired     $ 1,610
Weighted average useful life     3 years
Amortization of assets $ 491 $ 535  
Equipois      
Business Acquisition [Line Items]      
Initial payment     $ 1,100