XML 49 R37.htm IDEA: XBRL DOCUMENT v3.6.0.2
Note 8 - Common Stock - Activity of Stock Option Plan (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
$ / shares
shares
Outstanding, options (in shares) | shares 1,705,500
Outstanding, weighted average exercise price, options (in dollars per share) | $ / shares $ 2.41
Granted, options (in shares) | shares 1,793,975
Granted, weighted average exercise price, options (in dollars per share) | $ / shares $ 0.07
Outstanding, options (in shares) | shares 3,499,475
Outstanding, weighted average exercise price, options (in dollars per share) | $ / shares $ 1.21
Outstanding, weighted average exercise price, options (Year) 8 years 73 days
Outstanding, weighted average exercise price, options | $ $ 0
Exercisable, options (in shares) | shares 1,299,394
Exercisable at March 31, 2016, weighted average exercise price, options (in dollars per share) | $ / shares $ 3.12
Exercisable at March 31, 2016, weighted average exercise price, options (Year) 5 years 182 days
Exercisable at March 31, 2016, weighted average exercise price, options | $ $ 0