Note 11 - Actual Asset Allocation For The Assets Within The Company's Plans (Details)	Jun. 30, 2015	Jun. 30, 2014
Cash and Cash Equivalents [Member]
Asset category:
Asset allocation	1.00%	1.00%
Fixed Income Securities [Member]
Asset category:
Asset allocation	17.00%	14.00%
Equity Securities [Member]
Asset category:
Asset allocation	25.00%	24.00%
Mutual and Pooled Funds [Member]
Asset category:
Asset allocation	57.00%	61.00%
Asset allocation	100.00%	100.00%