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Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Property, plant and equipment $ 21,840 $ 19,369  
Accumulated depreciation (17,264) (15,259)  
Property, Plant and equipment, net 4,576 4,110  
Depreciation 2,009 2,000 $ 1,731
Machinery and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 17,305 15,494  
Office Furniture and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment 1,129 991  
Leasehold Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment $ 3,406 $ 2,884