Note 7 - Securities Available For Sale - Available-for-Sale Securities at Amortized Cost and Fair Value (Details) - USD ($)	Mar. 31, 2017	Jun. 30, 2016
Amortized Cost	$ 94,794,000	$ 93,643,000
Gross Unrealized Gains	425,000	2,204,000
Gross Unrealized Losses	(456,000)	(3,000)
Fair Value	94,763,000	95,844,000
US Treasury Securities [Member]
Amortized Cost	47,408,000	47,355,000
Gross Unrealized Gains	316,000	1,419,000
Gross Unrealized Losses
Fair Value	47,724,000	48,774,000
Corporate Debt Securities [Member]
Amortized Cost	13,178,000	13,291,000
Gross Unrealized Gains	39,000	97,000
Gross Unrealized Losses		(3,000)
Fair Value	13,217,000	13,385,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Amortized Cost	27,021,000	31,782,000
Gross Unrealized Gains	3,000	441,000
Gross Unrealized Losses	(359,000)
Fair Value	26,665,000	32,223,000
Equity Securities [Member]
Amortized Cost	5,972,000
Gross Unrealized Gains
Gross Unrealized Losses	(97,000)
Fair Value	5,875,000
Mutual Fund Investments [Member]
Amortized Cost	1,215,000	1,215,000
Gross Unrealized Gains	67,000	247,000
Gross Unrealized Losses
Fair Value	$ 1,282,000	$ 1,462,000

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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