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Interim Period Reporting (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 13, 2015
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Interim Period Reporting (Textual)            
Net loss   $ (1,331) $ (1,792) $ (2,698) $ (3,864)  
Accumulated deficit   $ (176,447)   (176,447)   $ (173,749)
Net cash used in operating activities       $ (2,075) $ (2,819)  
Issuance of common stock, shares 3,200,000          
Share price $ 1.90          
Gross proceeds from issuance of shares $ 6,100          
Cash received from issuance of shares 5,400          
Stock issuance cost $ 700          
Common stock available for issuance under shelf registration   1,800,000   1,800,000    
Working capital       $ 1,400   $ 1,500