Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 25, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Balance       $ 4,364  
Net proceeds from sale of common stock       1,444 $ 1,927
Net proceeds from private sale of stock $ 978     978  
Stock-based compensation expense       140  
Issuance of restricted stock options       55  
Net loss   $ (911) $ (753) (3,158) $ (2,976)
Balance   2,845   2,845  
Common Stock [Member]          
Balance       $ 6  
Balance, shares       6,340,604  
Net proceeds from sale of common stock        
Net proceeds from sale of common stock, shares       271,520  
Net proceeds from private sale of stock       $ 1  
Net proceeds from private sale of stock, shares       806,452  
Stock-based compensation expense        
Issuance of restricted stock options        
Issuance of restricted stock options, shares       55,147  
Net loss        
Balance   $ 7   $ 7  
Balance, shares   7,473,723   7,473,723  
Additional paid-in capital [Member]          
Balance       $ 36,202  
Net proceeds from sale of common stock       466  
Net proceeds from private sale of stock       977  
Stock-based compensation expense       140  
Issuance of restricted stock options       55  
Net loss        
Balance   $ 37,840   37,840  
Accumulated deficit [Member]          
Balance       (31,844)  
Net proceeds from sale of common stock        
Net proceeds from private sale of stock        
Stock-based compensation expense        
Net loss       (3,158)  
Balance   $ (35,002)   $ (35,002)