XML 39 R27.htm IDEA: XBRL DOCUMENT v3.10.0.1
Intangible assets, net - Intangible Assets Other than Goodwill (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]    
Intangible Assets, Net $ 18,931 $ 15,353
Software Developed for Internal Use    
Finite Lived Intangible Assets [Line Items]    
Intangible Assets, Gross Amount 21,455 16,642
Intangible Assets, Accumulated Amortization (2,524) (1,289)
Intangible Assets, Net $ 18,931 $ 15,353
Software Developed for Internal Use | Minimum    
Finite Lived Intangible Assets [Line Items]    
Amortization Period 5 years  
Software Developed for Internal Use | Maximum    
Finite Lived Intangible Assets [Line Items]    
Amortization Period 10 years