Note 4 - Unrecognized Compensation Expense for Non-vested Restricted Stock Awards (Details) (Details) - Restricted Stock [Member] - USD ($)	Jun. 30, 2016	Jun. 30, 2015
Award 2016 [Member]
2016	$ 30,064
2017	60,128
2018	60,128
2019	60,128
2020	10,021
	220,469
2015 [Member]
2016	28,251
2017	56,502
2018	56,502
2019	7,063
2020
	148,318
2014 [Member]
2016	28,253
2017	56,506
2018	7,063
2019
2020
	91,822
2016	86,568
2017	173,136
2018	123,693
2019	67,191
2020	10,021
	$ 460,609	$ 484,401