XML 24 R14.htm IDEA: XBRL DOCUMENT v3.21.1
Property and Equipment
3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment PROPERTY AND EQUIPMENT
Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the related assets and consist of the following (in thousands):

March 31,
2021
December 31,
2020
Equipment (useful life 3 to 15 years)
$1,281 $1,281 
Tooling (useful life 2 to 5 years)
240 240 
Vehicles (useful life 5 years)
80 47 
Furniture and fixtures (useful life 5 years)
137 137 
Computer software (useful life 3 years)
1,121 1,057 
Leasehold improvements (the shorter of useful life or lease life)169 169 
Finance lease right-of-use asset13 13 
Projects in progress152 140 
Property and equipment at cost3,193 3,084 
Less: accumulated depreciation(2,711)(2,664)
Property and equipment, net$482 $420 

Depreciation expense was $47 thousand and $46 thousand for the three months ended March 31, 2021 and 2020, respectively.