Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Schedule of property and equipment

		December 31,
	Useful Life	2019		2018
Research and development equipment	5 years	$	1,585	$	1,552
Office and computer equipment	3 years		753		742
Autos	5 years		54		54
Furniture and fixtures	7 years		41		37
Leasehold improvements	*		283		283
			2,716		2,668
Less accumulated depreciation and amortization			1,978		1,585
Total		$	738	$	1,083

* Shorter of lease term or estimated useful life