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Property, Plant and Equipment, Net - Plant, Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 37,263 $ 29,880
Less: accumulated depreciation and amortization (14,690) (11,036)
Property, plant and equipment, net 22,573 18,844
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,143 1,830
Machinery, equipment and vehicles    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 17,774 15,052
Office furniture and equipment, computers and software    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 17,346 $ 12,998