Property, Plant and Equipment

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant, and Equipment

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

	March 31, 2020		December 31, 2019
Land	$	11,041	$	11,076
Improvements to land and leaseholds	17,172		17,172
Buildings	34,619		35,241
Machinery and equipment, including equipment under finance leases	122,983		122,599
Construction in progress	7,692		5,234
Gross property, plant, and equipment	193,507		191,322
Less accumulated depreciation and amortization, including accumulated amortization of finance leases	(110,565)		(109,008)
Property, plant, and equipment - net	$	82,942	$	82,314

Depreciation expense was $2,707 and $2,772 for the three months ended March 31, 2020 and 2019, respectively.

We review our property, plant, and equipment for recoverability whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. We recognize an impairment loss if 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, 2020 and 2019.