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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property, plant and equipment

Property, plant and equipment consisted of:
 
December 31,
2019
 
December 31,
2018
Land and improvements
$
1,624

 
$
1,624

Buildings
17,733

 
16,919

Machinery and equipment
202,667

 
198,649

Leasehold improvements
52,652

 
51,322

 
274,676

 
268,514

Less accumulated depreciation and amortization
(192,516
)
 
(181,778
)
 
$
82,160

 
$
86,736