Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Property, plant and equipment consisted of:

	December 31, 2020		December 31, 2019
Land and improvements	$	1,624	$	1,624
Buildings	17,772		17,733
Machinery and equipment	204,194		202,667
Leasehold improvements	53,444		52,652
	277,034		274,676
Less accumulated depreciation and amortization	(199,046)		(192,516)
	$	77,988	$	82,160