Property, Plant and Equipment

3 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant, and Equipment

Property, plant, and equipment as of March 31, 2021 and December 31, 2020 consisted of the following:

	March 31, 2021		December 31, 2020
Land	$	6,632	$	6,627
Improvements to land and leaseholds	17,573		17,573
Buildings	27,487		27,348
Machinery and equipment, including equipment under finance leases	117,272		116,175
Construction in progress	1,287		915
Gross property, plant, and equipment	170,251		168,638
Less accumulated depreciation and amortization, including accumulated amortization of finance leases	(108,668)		(106,553)
Property, plant, and equipment - net	$	61,583	$	62,085

Depreciation expense was $1,990 and $1,935 for the three months ended March 31, 2021 and 2020, respectively. The Company reviews its property, plant, and equipment for recoverability whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. The Company recognizes an impairment loss if it believes that the carrying amount of a long-lived asset is not recoverable and exceeds its fair value. There were no impairments of property, plant, and equipment during the three months ended March 31, 2021 and 2020.