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Statement of Stockholders' Equity - 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 service 137,000 $ 0 137,000 0
Shares issued for services (in shares)   23,034    
Shares issued for services ($3.96 per share) 20,000 $ 0 20,000 0
Shares issued for services ($3.96 per share) (in shares)   5,000    
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)   166,536    
Shares issued upon exercise of options ($4.88 per share) 0 $ 0 0 0
Shares issued upon exercise of options ($4.88 per share) (in shares)   2,813    
Shares issued upon exercise of options ($5.21 per share) 0 $ 0 0 0
Shares issued upon exercise of options ($5.21 per share) (in shares)   84    
Share based compensation 797,000 $ 0 797,000 0
Share based compensation (in shares)   0    
Net loss (7,898,000) $ 0 0 (7,898,000)
Balances at Dec. 31, 2015 12,578,000 $ 1,000 41,735,000 (29,158,000)
Balances (in shares) at Dec. 31, 2015   12,868,943    
Shares issued for service 150,000 $ 0 150,000 0
Shares issued for services (in shares)   44,112    
Shares issued for services ($3.96 per share) 20,000 $ 0 20,000 0
Shares issued for services ($3.96 per share) (in shares)   5,000    
Shares issued for services ($4.85 per share) 24,000 $ 0 24,000 0
Shares issued for services ($4.85 per share) (in shares)   5,000    
Shares issued upon exercise of warrants ($2.20 per share) 0 $ 0 0 0
Shares issued upon exercise of warrants ($2.20 per share) (in shares)   60,883    
Share based compensation 645,000 $ 0 645,000 0
Share based compensation (in shares)   0    
Net loss (11,173,000) $ 0 0 (11,173,000)
Balances at Dec. 31, 2016 $ 2,244,000 $ 1,000 $ 42,574,000 $ (40,331,000)
Balances (in shares) at Dec. 31, 2016   12,983,938