Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stock Based Compensation: Schedule of Share-based Compensation, Activity (Details)

v3.3.0.814
Note 7 - Stock Based Compensation: Schedule of Share-based Compensation, Activity (Details) - $ / shares
6 Months Ended 12 Months Ended
Sep. 30, 2015
Mar. 31, 2015
Mar. 31, 2014
Details      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 1,745,900 2,113,500 3,074,850
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Grant Date Fair Value $ 1.98 $ 1.90 $ 1.47
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures   133,900  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 4.03  
Exercised options - shares   (596,635)  
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period Weighted Average Grant Date Fair Value   $ 0.55  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (367,600) (498,615)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value $ 1.50 $ 1.39  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number 1,037,600 907,000  
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable Weighted Average Grant Date Fair Value $ 2.19 $ 2.27