Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Narrative)

v3.7.0.1
Stockholders' Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Feb. 07, 2017
Jun. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Warrant exercise price   $ 8.45 $ 8.45  
Proceeds from issuance of shares     $ 10,630 $ 9,114
Stock option exercises   16,561 35,334  
Stock Purchase Agreement [Member] | Johnson Controls [Member]        
Number of shares issued 939,005      
Legal fees $ 167      
Share price (in dollars per share) $ 11.33      
Proceeds from issuance of shares $ 10,600