v3.22.4
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant, and equipment, net consists of the following (in thousands):
    Estimated Useful Lives (Years)
December 31,
20222021
LandN/A$840 $840 
Building and land improvements
5-40
9,031 7,801 
Machinery and equipment
3-5
12,371 10,693 
Furniture and fixtures
3-7
1,787 1,775 
Vehicles
5
125 65 
24,154 21,174 
Less: accumulated depreciation(7,284)(5,600)
Property, plant and equipment, net$16,870 $15,574 

Depreciation expense for the years ended December 31, 2022, 2021 and 2020 was $1.9 million, $1.7 million and $1.4 million, respectively. During the years ended December 31, 2022, 2021 and 2020, $1.5 million, $1.5 million and $1.1 million, respectively, of depreciation expense was allocated to cost of revenue. During the years ended December 31, 2022, 2021 and 2020, $0.4 million, $0.2 million and $0.3 million, respectively, of depreciation expense was allocated to operating expenses.