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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment consist of the following:
(in thousands)20232022
Land$723 $723 
Leasehold improvements3,079 3,495 
Buildings1,534 1,534 
Machinery, fixtures and equipment93,758 98,225 
Construction-in-progress1,330 1,657 
 100,424 105,634 
Less accumulated depreciation and amortization(70,669)(70,100)
Property, plant and equipment, net$29,755 $35,534 

The following table sets forth depreciation expense related to property, plant and equipment:
(in thousands)20232022
Cost of sales$5,918 $6,196 
Selling, general and administrative243 225 
Total depreciation$6,161 $6,421