Quarterly report pursuant to Section 13 or 15(d)

6. Common Stock and Warrants (Details Narrative)

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6. Common Stock and Warrants (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Stock issued upon exercise of warrants   20,000   42,000
Proceeds from warrant exercises   $ 177 $ 0 $ 368
Warrants exercised 0   0  
Non-employee members of the Board of Directors [Member]        
Restricted stock granted     95,000  
Grant date fair value per share     $ 5.44  
Executive officers and other employees [Member]        
Restricted stock granted     253,000  
Grant date fair value per share     $ 5.44  
2016 Stock Incentive Plan [Member]        
Shares authorized for issuance 1,150,000   1,150,000