Note 3 - Securities Available-for-Sale with Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
US Government-sponsored Enterprises Debt Securities [Member]
Less than 12 Months - Fair Value		$ 7,964
Less than 12 Months - Unrealized Loss		(46)
12 Months or More - Fair Value
12 Months or More - Unrealized Loss
Fair Value		7,964
Unrealized Loss		(46)
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Less than 12 Months - Fair Value		42,112
Less than 12 Months - Unrealized Loss		(407)
12 Months or More - Fair Value		3,645
12 Months or More - Unrealized Loss		(66)
Fair Value		45,757
Unrealized Loss		(473)
Less than 12 Months - Fair Value		50,076
Less than 12 Months - Unrealized Loss		(453)
12 Months or More - Fair Value		3,645
12 Months or More - Unrealized Loss		(66)
Fair Value		53,721
Unrealized Loss		$ (519)

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
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