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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 113,961 $ 110,742
Accumulated depreciation (67,834) (66,262)
Property and equipment, net $ 46,127 44,480
Automobile    
Property, Plant and Equipment [Line Items]    
Useful life (years) 3 years  
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 64 34
Computer hardware and software    
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 5,046 4,840
Computer hardware and software | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 3 years  
Computer hardware and software | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 5 years  
Manufacturing and lab equipment    
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 71,663 69,849
Manufacturing and lab equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 2 years  
Manufacturing and lab equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 7 years  
Office equipment and furniture    
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 1,769 1,605
Office equipment and furniture | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 5 years  
Office equipment and furniture | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 7 years  
Leasehold and building improvements    
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 22,628 21,934
Leasehold and building improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 2 years  
Leasehold and building improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Useful life (years) 12 years  
Buildings    
Property, Plant and Equipment [Line Items]    
Useful life (years) 30 years  
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 9,392 9,081
Land    
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, gross $ 3,399 $ 3,399