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Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Property, Plant and Equipment [Line Items]    
Total gross value $ 192,003 $ 187,243
Less accumulated depreciation (118,798) (116,331)
Total net value 73,205 70,912
Land    
Property, Plant and Equipment [Line Items]    
Total gross value 2,762 2,757
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Total gross value 21,009 20,794
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Total gross value 147,376 142,980
Office furniture, fixtures and equipment    
Property, Plant and Equipment [Line Items]    
Total gross value 10,846 13,231
Automotive equipment    
Property, Plant and Equipment [Line Items]    
Total gross value 1,205 1,584
Construction in progress    
Property, Plant and Equipment [Line Items]    
Total gross value $ 8,805 $ 5,897