Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

4. PROPERTY, PLANT AND EQUIPMENT

Property, plant, and equipment consisted of the following (in thousands):

	December 31, 2020		December 31, 2019
Land	$	565	$	565
Building and leasehold improvements		13,013		12,890
Equipment and fixtures		20,955		17,739
Software		20,047		17,716
Vehicles		145		145
Property, plant and equipment - gross		54,725		49,055
Less: accumulated depreciation		(27,092)		(23,016)
Property, plant and equipment - net	$	27,633	$	26,039

Depreciation expense for the years ended December 31, 2020, 2019 and 2018 was $4.1 million, $3.7 million and $3.6 million, respectively.