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Condensed Statement of Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Balances at Dec. 31, 2014 $ 2,959,000 $ 1,000 $ 24,218,000 $ (21,260,000)
Balances (in shares) at Dec. 31, 2014   9,681,476    
Shares issued in underwritten offering ($5.85 per share) 17,491,000 $ 0 17,491,000 0
Shares issued in underwritten offering ($5.85 per share) (in shares)   2,990,000    
Issuance costs of underwritten offering (1,212,000) $ 0 (1,212,000) 0
Issuance costs of underwritten offering (in shares)   0    
Shares issued for services ($5.97 per share) 62,000 $ 0 62,000 0
Shares issued for services ($5.97 per share) (in shares)   10,470    
Shares issued upon exercise of options ($2.20 per share) 284,000 $ 0 284,000 0
Shares issued upon exercise of options ($2.20 per share) (in shares)   129,062    
Shares issued upon exercise of options ($4.88 per share) 1,000 $ 0 1,000 0
Shares issued upon exercise of options ($4.88 per share) (in shares)   210    
Share based compensation 355,000 $ 0 355,000 0
Share based compensation (in shares)   0    
Net loss (3,379,000) $ 0 0 (3,379,000)
Balances at Jun. 30, 2015 $ 16,561,000 $ 1,000 $ 41,199,000 $ (24,639,000)
Balances (in shares) at Jun. 30, 2015   12,811,218