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Note 3 - Securities (Details) - Temporarily Impaired Securities (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Note 3 - Securities (Details) - Temporarily Impaired Securities [Line Items] |  |
Less Than 12 Months - Fair Value | $ 202,015 | $ 53,709
Less Than 12 Months - Unrealized Loss | 27,059 | 838
12 Months or More - Fair Value | 18,493 | 615
12 Months or More - Unrealized Loss | 3,702 | 176
US Government Agencies [Member] |  |
Note 3 - Securities (Details) - Temporarily Impaired Securities [Line Items] |  |
Less Than 12 Months - Fair Value | 138,324 | 44,351
Less Than 12 Months - Unrealized Loss | 20,400 | 622
12 Months or More - Fair Value | 15,796 |
12 Months or More - Unrealized Loss | 3,211 |
States and Political Subdivisions [Member] |  |
Note 3 - Securities (Details) - Temporarily Impaired Securities [Line Items] |  |
Less Than 12 Months - Fair Value | 58,013 | 9,358
Less Than 12 Months - Unrealized Loss | 6,131 | 216
12 Months or More - Fair Value | 2,697 | 482
12 Months or More - Unrealized Loss | 491 | 3
Corporate Securities [Member] |  |
Note 3 - Securities (Details) - Temporarily Impaired Securities [Line Items] |  |
Less Than 12 Months - Fair Value | 5,511 |
Less Than 12 Months - Unrealized Loss | 506 |
Other Securities [Member] |  |
Note 3 - Securities (Details) - Temporarily Impaired Securities [Line Items] |  |
Less Than 12 Months - Fair Value | 167 |
Less Than 12 Months - Unrealized Loss | 22 |
12 Months or More - Fair Value |  | 133
12 Months or More - Unrealized Loss |  | $ 173

X
- Definition Amount of the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for securities. + References No definition available. + Details
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X
- Definition Amount of the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for securities. + References No definition available. + Details
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X
- Definition This item represents the aggregate fair value of investments in debt and equity securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities that have been in a continuous unrealized loss position for twelve months or longer. + References No definition available. + Details
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