Note 14 - Capital Structure and Stock-based Compensation (Details) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Nov. 30, 1995
Note 14 - Capital Structure and Stock-based Compensation (Details) [Line Items]
Common Stock, Shares Authorized (in Shares)	20,000,000	20,000,000
Preferred Stock, Shares Authorized (in Shares)	2,500,000	2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)	0	0	10,000
Share-based Compensation	$ 4,400	$ 4,400	$ 4,100
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 9,200
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	25 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares)	0	12,697	13,543
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 35,496	$ 50,809
The 1995 Plan [Member]
Note 14 - Capital Structure and Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)				1,000,000
Increase in Maximun Number of Available Shares of Common Stock, Percentage				1.00%