Subsequent Events (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 07, 2017	Dec. 31, 2016	Dec. 31, 2015
Proceeds from issuance of shares		$ 30,709	$ 32,862
Johnson Controls [Member]
Proceeds from issuance of shares		$ 10,500
Subsequent Event [Member] \| Stock Purchase Agreement [Member] \| Johnson Controls [Member]
Number of shares issued	939,005
Share price (in dollars per share)	$ 11.33
Proceeds from issuance of shares	$ 10,600