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Note 3 - Securities (Details) - Securities Available-for-Sale with Unrealized Losses - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Securities Available for Sale |  |
Less than 12 Months - Fair Value | $ 20,248 | $ 11,232
Less than 12 Months - Unrealized Loss | (167) | (20)
Fair Value | 28,033 | 27,540
Unrealized Loss | (216) | (240)
12 Months or More - Fair Value | 7,785 | 16,308
12 Months or More - Unrealized Loss | (49) | (220)
US Government-sponsored Enterprises Debt Securities [Member] |  |
Securities Available for Sale |  |
Less than 12 Months - Fair Value | 3,996 |
Less than 12 Months - Unrealized Loss | (9) |
Fair Value | 7,995 | 7,911
Unrealized Loss | (17) | (104)
12 Months or More - Fair Value | 3,999 | 7,911
12 Months or More - Unrealized Loss | (8) | (104)
Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |
Securities Available for Sale |  |
Less than 12 Months - Fair Value | 16,252 | 11,232
Less than 12 Months - Unrealized Loss | (158) | (20)
Fair Value | 20,038 | 19,629
Unrealized Loss | (199) | (136)
12 Months or More - Fair Value | 3,786 | 8,397
12 Months or More - Unrealized Loss | $ (41) | $ (116)

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