Property and Equipment

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

Property and Equipment

Note 6 - Property and Equipment

Property and equipment, net consist of the following:

	Useful	September 30,			December 31,
	Life	2018			2017
Research and development equipment	5 years	$	1,540		$	1,349
Office and computer equipment	3 years		730			672
Autos	5 years		54			305
Furniture and fixtures	7 years		34			34
Leasehold improvements	*		283			283
			2,641			2,643
Less accumulated depreciation			(1,470	)		(1,189	)
Total		$	1,171		$	1,454

* Shorter of lease term or estimated useful life

Depreciation expense was approximately $108 and $118 for the three months ended September 30, 2018 and 2017, respectively, and $332 and $272 for nine months ended September 30, 2018 and 2017, respectively.