Note 3 - Stock-based Compensation - Unrecognized Compensation Expense for Non-vested Restricted Stock Awards (Details)	Sep. 30, 2015 USD ($)
Restricted Stock [Member] | 2015 [Member]
2015	$ 19,376
2016	77,503
2017	77,503
2018	77,503
2019	9,688
	261,573
Restricted Stock [Member] | 2014 [Member]
2015	19,377
2016	77,506
2017	77,506
2018	$ 9,688
2019
	$ 184,077
Restricted Stock [Member]
2015	38,753
2016	155,009
2017	155,009
2018	87,191
2019	9,688
	445,650
	$ 0