Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Details)

v3.20.4
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 106,150 $ 105,497
Less accumulated depreciation 71,054 64,807
Property, plant and equipment, net 35,096 40,690
Depreciation expense 7,572 7,578
Land    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 3 63
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 2,939 1,921
Buildings    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 84 214
Machinery, Fixtures and Equipment    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross 100,352 100,300
Construction-in-progress    
Property, Plant and Equipment [Line Items]    
Total property, plant and equipment, gross $ 2,772 $ 2,999