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Property, Plant, and Equipment (Tables)
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Schedule of Estimated Useful Lives of Property, Plant, and Equipment
Ranges of estimated useful lives for computing depreciation are as follows:
Land improvements20 years
Buildings and improvements
20 - 40 years
Machinery and equipment
3 - 15 years
Tools, dies and patterns
3 - 5 years
Property, plant, and equipment consisted of the following at December 31 (in thousands):
20212020
Land and land improvements$6,009 $6,009 
Buildings43,901 43,545 
Machinery and equipment124,760 121,382 
Tools, dies, and patterns2,225 2,195 
Additions in progress6,605 1,422 
Total183,500 174,553 
Less accumulated depreciation(107,603)(100,501)
Property, plant and equipment, net$75,897 $74,052