Note 6 - Stock Based Compensation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period				17,500
Allocated Share-based Compensation Expense			$ 0	$ 10,479