Property and Equipment

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Note 6 - Property and Equipment

Property and equipment, net consist of the following:

	Useful Life	June 30,  2017		December 31, 2016
Research and development equipment	5 years	$	1,335	$	989
Office and computer equipment	3 years		672		235
Furniture and fixtures	7 years		31		17
Autos/Trucks	5 years		306		—
Leasehold improvements	*		265		189
			2,609		1,430
Less accumulated depreciation and amortization			953		799
Total		$	1,656	$	631

* Shorter of lease term or estimated useful life

Depreciation and amortization expense was approximately $95 and $48 for the three months ended June 30, 2017 and 2016, respectively and $154 and $94 for the six months ended June 30, 2017 and 2016, respectively.