Annual report pursuant to Section 13 and 15(d)

Note 7 - Preferred Stock, Warrants and Options - Warrants (Details)

v3.8.0.1
Note 7 - Preferred Stock, Warrants and Options - Warrants (Details)
12 Months Ended
Dec. 31, 2017
USD ($)
$ / shares
shares
Outstanding, number of warrants (in shares) | shares 65,228
Outstanding, weighted-average exercise price (in dollars per share) | $ / shares $ 108
Granted, number of warrants (in shares) | shares
Granted, weighted-average exercise price (in dollars per share) | $ / shares
Expired, number of warrants (in shares) | shares (32,500)
Expired, weighted-average exercise price (in dollars per share) | $ / shares $ 1.65
Exercised, number of warrants (in shares) | shares
Exercised, weighted-average exercise price (in dollars per share) | $ / shares
Outstanding, number of warrants (in shares) | shares 32,728
Outstanding, weighted-average exercise price (in dollars per share) | $ / shares $ 215.15
Outstanding, weighted-average remaining life (Year) 32 days
Outstanding, aggregate intrinsic value | $
Exercisable, number of warrants (in shares) | shares 32,728
Exercisable, weighted-average exercise price (in dollars per share) | $ / shares $ 215.15
Exercisable, weighted-average remaining life (Year) 32 days
Exercisable, aggregate intrinsic value | $