Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Schedule of property and equipment

Property and equipment, net consist of the following:

	Useful Life	September 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		34		17
Autos/Trucks	5 years		306		—
Leasehold improvements	*		283		189
			2,630		1,430
Less accumulated depreciation and amortization			1,071		799
Total		$	1,559	$	631

* Shorter of lease term or estimated useful life