Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

(1) Property, Plant and Equipment

Property, plant and equipment at December 31, 2020 and 2019 consist of the following:

	2020			2019			Estimated useful lives
Land	$	2,756		$	2,706
Buildings and improvements		19,786			18,640		10 to 30 years
Machinery and equipment		124,199			116,757		3 to 15 years
Office furniture, fixtures and equipment		7,403			6,228		3 to 10 years
Automotive equipment		1,747			1,762		3 to 6 years
Construction in progress		10,392			5,263
Total gross value		166,283			151,356
Less accumulated depreciation		(100,901	)		(94,835	)
Total net value	$	65,382		$	56,521

For the years ended December 31, 2020, 2019, and 2018, the Company’s aggregate depreciation expense related to property, plant and equipment was $7,466, $6,504, and $8,142, respectively. For the years ended December 31, 2020, 2019, and 2018, the Company eliminated from assets and accumulated depreciation $1,400, $868 and $4,057 of fully depreciated assets, respectively.