Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

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, 2019		December 31, 2018
Land	$	565	$	565
Building and leasehold improvements		12,890		12,881
Equipment and fixtures		17,739		12,187
Software		17,716		28,683
Vehicles		145		145
Property, plant and equipment- gross		49,055		54,461
Less accumulated depreciation		23,016		34,714
Property, plant and equipment- net	$	26,039	$	19,747

Depreciation expense for the years ended December 31, 2019, 2018 and 2017 was $3.7 million, $3.6 million and $4.2 million, respectively.