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Property, Plant & Equipment (Tables)
3 Months Ended
Mar. 31, 2020
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment [Table]

Property, plant and equipment consisted of the following for the periods specified:
 
March 31, 2020
 
December 31, 2019
Property, plant and equipment
$
171,363,000

 
$
170,881,000

Accumulated depreciation
(93,944,000
)
 
(91,675,000
)
Property, plant and equipment — net
$
77,419,000

 
$
79,206,000