Note 4 - Unrecognized Compensation Expense for Non-vested Restricted Stock Awards (Details) (Details) - Restricted Stock [Member] - USD ($)	Mar. 31, 2016	Mar. 31, 2015
Award 2016 [Member]
2016	$ 45,095
2017	60,128
2018	60,128
2019	60,128
2020	10,021
	235,500
2015 [Member]
2016	58,127
2017	77,503
2018	77,503
2019	$ 9,688
2020
	$ 222,821
2014 [Member]
2016	58,130
2017	77,506
2018	$ 9,688
2019
2020
	$ 145,324
2016	161,352
2017	215,137
2018	147,319
2019	69,816
2020	10,021
	$ 603,645	$ 523,154