Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Note 7 - Other Equity - Stock Option Transactions (Details)

v3.10.0.1
Note 7 - Other Equity - Stock Option Transactions (Details)
9 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Statement Line Items [Line Items]    
Outstanding, Beginning of period 2,344,000 2,005,000
Outstanding, Beginning of period, weighted average exercise price $ 3.46 $ 4.31
Stock options, granted 2,284,000 780,000
Stock options, weighted average exercise price, granted $ 2.99 $ 1.14
Stock options, exercised (96,000)
Stock options, weighted average exercise price, exercised $ 2.28
Stock options, forfeited (51,000) (165,000)
Stock options, weighted average exercise price, forfeited $ 2.34 $ 3.34
Stock options, expired (10,000) (320,000)
Stock options, weighted average exercise price, expired $ 4.97 $ 4.60
Outstanding, end of period 4,471,000 2,300,000
Outstanding, end of period, weighted average exercise price $ 3.21 $ 3.52