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Condensed Statement of Stockholders' Equity - 6 months ended Jun. 30, 2017 - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
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    
Shares issued in rights offering ($3.03 per share) 7,258,000 $ 1,000 7,257,000 0
Shares issued in rights offering ($3.03 per share) (In shares)   2,395,471    
Warrants issued in rights offering ($0.97 per warrant) 2,324,000 $ 0 2,324,000 0
Issuance costs of rights offering (915,000) 0 (915,000) 0
Shares issued in payment of accrued compensation ($3.60 per share) 490,000 $ 0 490,000 0
Shares issued in payment of accrued compensation ($3.60 per share) (In shares)   136,110    
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 for 2017 board services ($3.60 per share) 0 $ 0 0 0
Shares issued for 2017 board services ($3.60 per share) (In shares)   83,334    
Share based compensation 369,000 $ 0 369,000 0
Net loss (4,615,000) 0 0 (4,615,000)
Balances at Jun. 30, 2017 $ 7,179,000 $ 2,000 $ 52,123,000 $ (44,946,000)
Balances (in shares) at Jun. 30, 2017   15,603,853