Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment (Details)

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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross $ 105,433   $ 105,433   $ 108,038
Less: accumulated depreciation and amortization (73,452)   (73,452)   (70,993)
Property, plant and equipment, net 31,981   31,981   37,045
Total depreciation 1,590 $ 1,748 4,833 $ 4,950  
Cost of sales          
Property, Plant and Equipment [Line Items]          
Total depreciation 1,527 1,690 4,643 4,774  
Selling, general and administrative          
Property, Plant and Equipment [Line Items]          
Total depreciation 63 $ 58 190 $ 176  
Land          
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross 723   723   723
Leasehold improvements          
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross 3,672   3,672   4,114
Buildings          
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross 1,534   1,534   1,534
Machinery, fixtures and equipment          
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross 98,323   98,323   99,786
Construction-in-progress          
Property, Plant and Equipment [Line Items]          
Total property, plant and equipment, gross $ 1,181   $ 1,181   $ 1,881