Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant, and Equipment

Property, plant, and equipment as of December 31, 2020 and 2019 consisted of the following:

	December 31,
	2020		2019
Land	$	6,627	$	6,612
Improvements to land and leaseholds	17,573		17,172
Buildings	27,348		25,370
Machinery and equipment, including equipment under finance leases	116,175		106,372
Construction in progress	915		3,778
Gross property, plant, and equipment	168,638		159,304
Less: accumulated depreciation and amortization, including accumulated amortization of finance leases	(106,553)		(98,869)
Property, plant, and equipment - net	$	62,085	$	60,435

Depreciation expense, including amortization of assets under capital leases, for the years ended December 31, 2020, 2019, and 2018 amounted to $7,850, $7,944, and $8,066, respectively.

There were no material asset impairments recorded for the year ended December 31, 2020. During the year ended December 31, 2019, the Company sold land and a building for cash proceeds of $900, resulting in a gain of $198. During the year ended December 31, 2018, the Company sold 54.5 acres of land and improvements in exchange for cash proceeds of $2,047, resulting in a loss of $269.