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Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consist of the following: 
(in thousands)September 30, 2020December 31, 2019
Land63 63 
Leasehold improvements2,866 1,921 
Buildings84 214 
Machinery, fixtures and equipment100,097 100,300 
Construction-in-progress2,456 2,999 
105,566 105,497 
Less accumulated depreciation and amortization69,235 64,807 
Property, plant and equipment, net36,331 40,690