Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	100.00%	100.00%
Expected weighted average return	7.50%
Large-Cap Domestic Equities [Member]
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	32.00%
Expected compound annualized 5 year return	9.60%
Expected weighted average return	3.10%
Mid-Cap Domestic Equities [Member]
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	12.00%
Expected compound annualized 5 year return	11.50%
Expected weighted average return	1.40%
Small-Cap Domestic Equities [Member]
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	12.00%
Expected compound annualized 5 year return	12.40%
Expected weighted average return	1.50%
International Equities [Member]
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	9.00%
Expected compound annualized 5 year return	8.90%
Expected weighted average return	0.80%
Broad Bond Market [Member]
Note 13 - Employee Benefit Plans (Details) - Determination of assumed rate of return [Line Items]
Target percentage allocation	35.00%
Expected compound annualized 5 year return	2.20%
Expected weighted average return	0.70%