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Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 26,259 $ 22,353
Accumulated amortization (9,118) (8,344)
Total intangible assets, net 17,141 14,009
Tradename [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 555 555
Tradename [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 5 years  
Tradename [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 7 years  
Patents and technological know-how [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 10 years  
Intangible assets, gross $ 22,400 18,494
Proprietary software [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 2,981 2,981
Proprietary software [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 3 years  
Proprietary software [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 15 years  
Other [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 323 $ 323
Other [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 3 years  
Other [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives (in years) 5 years