Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT

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

	December 31, 2021		December 31, 2020
Land	$	565	$	565
Building and leasehold improvements	23,518		13,013
Equipment and fixtures	42,708		20,955
Software	21,894		20,047
Vehicles	145		145
Property, plant and equipment - gross	88,830		54,725
Less: accumulated depreciation	(32,699)		(27,092)
Property, plant and equipment - net	$	56,131	$	27,633

Depreciation expense for the years ended December 31, 2021, 2020 and 2019 was $5.7 million, $4.1 million and $3.7 million, respectively.