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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
Property, plant and equipment consist of the following:
(in thousands)March 31, 2021December 31, 2020
Land$$
Leasehold improvements2,955 2,939 
Buildings84 84 
Machinery, fixtures and equipment100,737 100,352 
Construction-in-progress2,187 2,772 
105,966 106,150 
Less: accumulated depreciation and amortization(72,489)(71,054)
Property, plant and equipment, net$33,477 $35,096