Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of 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, 2020		December 31, 2019
Equipment (useful life 3 to 15 years)	$	1,297	$	1,297
Tooling (useful life 2 to 5 years)	203		203
Vehicles (useful life 5 years)	47		47
Furniture and fixtures (useful life 5 years)	137		137
Computer software (useful life 3 years)	1,028		1,028
Leasehold improvements (the shorter of useful life or lease life)	211		211
Finance lease right-of-use asset	13		13
Projects in progress	95		48
Property and equipment at cost	3,031		2,984
Less: accumulated depreciation	(2,641)		(2,595)
Property and equipment, net	$	390	$	389