Note 3 - Securities Available for Sale (Details) - Available-For-Sale Securities with Continuous Unrealized Losses - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Note 3 - Securities Available for Sale (Details) - Available-For-Sale Securities with Continuous Unrealized Losses [Line Items]
Unrealized loss, less than 12 months	$ (186)
Estimated fair value, less than 12 months	23,767
Unrealized loss, 12 months or more		$ (45)
Estimated fair value, 12 months or more		1,261
Unrealized loss	(186)	(45)
Estimated fair value	23,767	1,261
Corporate Debt Securities [Member]
Note 3 - Securities Available for Sale (Details) - Available-For-Sale Securities with Continuous Unrealized Losses [Line Items]
Unrealized loss, less than 12 months	(31)
Estimated fair value, less than 12 months	8,388
Unrealized loss	(31)
Estimated fair value	8,388
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 3 - Securities Available for Sale (Details) - Available-For-Sale Securities with Continuous Unrealized Losses [Line Items]
Unrealized loss, less than 12 months	(149)
Estimated fair value, less than 12 months	14,170
Unrealized loss	(149)
Estimated fair value	14,170
Mutual Fund Investments [Member]
Note 3 - Securities Available for Sale (Details) - Available-For-Sale Securities with Continuous Unrealized Losses [Line Items]
Unrealized loss, less than 12 months	(6)
Estimated fair value, less than 12 months	1,209
Unrealized loss, 12 months or more		(45)
Estimated fair value, 12 months or more		1,261
Unrealized loss	(6)	(45)
Estimated fair value	$ 1,209	$ 1,261