Note 7 - Securities Available-for-Sale - Available-for-Sale Securities at Amortized Cost and Fair Value (Details) - USD ($)	Sep. 30, 2016	Jun. 30, 2016
US Treasury Securities [Member]
Amortized Cost	$ 47,373,000	$ 47,355,000
Gross Unrealized Gains	1,113,000	1,419,000
Gross Unrealized Losses
Securities available-for-sale	48,486,000	48,774,000
Corporate Debt Securities [Member]
Amortized Cost	13,253,000	13,291,000
Gross Unrealized Gains	95,000	97,000
Gross Unrealized Losses		(3,000)
Securities available-for-sale	13,348,000	13,385,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Amortized Cost	29,961,000	31,782,000
Gross Unrealized Gains	442,000	441,000
Gross Unrealized Losses
Securities available-for-sale	30,403,000	32,223,000
Mutual Fund Investments [Member]
Amortized Cost	1,215,000	1,215,000
Gross Unrealized Gains	240,000	247,000
Gross Unrealized Losses
Securities available-for-sale	1,455,000	1,462,000
Amortized Cost	91,802,000	93,643,000
Gross Unrealized Gains	1,890,000	2,204,000
Gross Unrealized Losses	0	(3,000)
Securities available-for-sale	$ 93,692,000	$ 95,844,000

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
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
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