Commitments and Contingencies (Details Narrative) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Aug. 07, 2015 ft²
Lease area \| ft²				21,697
Total rent expense	$ 500	$ 300	$ 200
Interstate Battery System International, Inc. [Member] \| Interstate Battery Agreement [Member]
Commitment paid per occurrence	2,000
Interstate Battery System International, Inc. [Member] \| Interstate Battery Agreement [Member] \| General and Administrative Expense [Member]
Charge for breach of contract	(600)
Johnson Controls [Member] \| Johnson Controls Agreement [Member]
Commitment paid per occurrence	$ 1,000