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Note 3 - Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Notes Tables |
Marketable Securities [Table Text Block] |
|  |  |  | Gross |  | Gross |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(In thousands) |  | Cost |  | Gains |  | Losses |  | Value
March 31, 2016 |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 65,507 |  |  | $ | 309 |  |  | $ | 106 |  |  | $ | 65,710 |
Agency CMO |  |  | 11,427 |  |  |  | 46 |  |  |  | 82 |  |  |  | 11,391 |
Other debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 79,377 |  |  |  | 97 |  |  |  | 120 |  |  |  | 79,354 |
Municipal obligations |  |  | 52,285 |  |  |  | 1,725 |  |  |  | 50 |  |  |  | 53,960 |
Subtotal - debt securities |  |  | 208,596 |  |  |  | 2,177 |  |  |  | 358 |  |  |  | 210,415 |
Mutual Funds |  |  | 249 |  |  |  | 0 |  |  |  | 0 |  |  |  | 249 |
Total Securities available for sale |  | $ | 208,845 |  |  | $ | 2,177 |  |  | $ | 358 |  |  | $ | 210,664 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 4 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 4 |
Total securities held to maturity |  | $ | 4 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 4 |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 42,158 |  |  | $ | 123 |  |  | $ | 271 |  |  | $ | 42,010 |
Agency CMO |  |  | 9,391 |  |  |  | 41 |  |  |  | 101 |  |  |  | 9,331 |
Other debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 84,797 |  |  |  | 11 |  |  |  | 355 |  |  |  | 84,453 |
Municipal obligations |  |  | 49,527 |  |  |  | 1,372 |  |  |  | 60 |  |  |  | 50,839 |
Subtotal - debt securities |  |  | 185,873 |  |  |  | 1,547 |  |  |  | 787 |  |  |  | 186,633 |
Mutual Funds |  |  | 118 |  |  |  | 0 |  |  |  | 0 |  |  |  | 118 |
Total Securities available for sale |  | $ | 185,991 |  |  | $ | 1,547 |  |  | $ | 787 |  |  | $ | 186,751 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 4 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 4 |
Total securities held to maturity |  | $ | 4 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 4 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Securities Available for Sale |  | Securities Held to Maturity
|  | Amortized |  | Fair |  | Amortized |  | Fair
|  | Cost |  | Value |  | Cost |  | Value
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 1,948 |  |  | $ | 1,959 |  |  | $ | 0 |  |  | $ | 0 |
Due after one year through five years |  |  | 75,360 |  |  |  | 75,502 |  |  |  | 0 |  |  |  | 0 |
Due after five years through ten years |  |  | 24,823 |  |  |  | 25,251 |  |  |  |  |  |  |  |  |
Due after ten years |  |  | 29,531 |  |  |  | 30,602 |  |  |  | 0 |  |  |  | 0 |
|  |  | 131,662 |  |  |  | 133,314 |  |  |  | 0 |  |  |  | 0 |
Mortgage-backed securities and CMO |  |  | 76,934 |  |  |  | 77,101 |  |  |  | 4 |  |  |  | 4 |
|  | $ | 208,596 |  |  | $ | 210,415 |  |  | $ | 4 |  |  | $ | 4 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | Number of |  |  |  | Gross
|  | Investment |  | Fair |  | Unrealized
|  | Positions |  | Value |  | Losses
(Dollars in thousands) |  |  |  |  |  |
Continuous loss position less than twelve months: |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 17 |  |  | $ | 43,556 |  |  | $ | 120 |
Agency CMO |  |  | 5 |  |  |  | 3,109 |  |  |  | 38 |
Agency mortgage-backed securities |  |  | 17 |  |  |  | 21,262 |  |  |  | 89 |
Muncipal obligations |  |  | 4 |  |  |  | 4,229 |  |  |  | 50 |
Total less than twelve months |  |  | 43 |  |  |  | 72,156 |  |  |  | 297 |
Continuous loss position more than twelve months: |  |  |  |  |  |  |  |  |  |  |  |
Agency CMO |  |  | 7 |  |  |  | 4,273 |  |  |  | 44 |
Agency mortgage-backed securities |  |  | 3 |  |  |  | 2,190 |  |  |  | 17 |
Total more than twelve months |  |  | 10 |  |  |  | 6,463 |  |  |  | 61 |
Total securities available for sale |  |  | 53 |  |  | $ | 78,619 |  |  | $ | 358 |

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