Property, Plant and Equipment

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant, and Equipment

Property, plant, and equipment as of March 31, 2019 and December 31, 2018 consisted of the following:

	March 31, 2019		December 31, 2018
Land	$	12,451	$	12,440
Improvements to land and leaseholds	17,580		17,610
Buildings	36,387		34,608
Machinery and equipment, including equipment under finance leases	121,658		120,914
Construction in progress	2,434		3,083
Gross property, plant, and equipment	190,510		188,655
Less accumulated depreciation and amortization, including accumulated amortization of finance leases	(104,640)		(101,798)
Property, plant, and equipment - net	$	85,870	$	86,857

Depreciation expense for the three months ended March 31, 2019 and 2018 was $2,772 and $2,944, 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, 2019 and 2018.