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Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value | $ 10,586 | $ 59,255
Less than Twelve Months, Gross Unrealized Losses | (107) | (4,608)
Twelve Months or Greater, Fair Value | 56,549 | 15,092
Twelve Months or Greater, Gross Unrealized Losses | (2,924) | (1,386)
Total, Fair Value | 67,135 | 74,347
Total, Gross Unrealized Losses | (3,031) | (5,994)
US Government Agencies Debt Securities [Member] |  |
Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value |  | 13,130
Less than Twelve Months, Gross Unrealized Losses |  | (929)
Twelve Months or Greater, Fair Value | 16,599 | 7,166
Twelve Months or Greater, Gross Unrealized Losses | (849) | (732)
Total, Fair Value | 16,599 | 20,295
Total, Gross Unrealized Losses | (849) | (1,661)
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member] |  |
Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value |  | 1,301
Less than Twelve Months, Gross Unrealized Losses |  | (38)
Total, Fair Value |  | 1,301
Total, Gross Unrealized Losses |  | (38)
US States and Political Subdivisions Debt Securities [Member] | Tax-exempt [Member] |  |
Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value |  | 26,743
Less than Twelve Months, Gross Unrealized Losses |  | (2,883)
Twelve Months or Greater, Fair Value |  | 2,678
Twelve Months or Greater, Gross Unrealized Losses |  | (383)
Total, Fair Value |  | 29,421
Total, Gross Unrealized Losses |  | (3,267)
US States and Political Subdivisions Debt Securities [Member] |  |
Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value | 9,511 |
Less than Twelve Months, Gross Unrealized Losses | (104) |
Twelve Months or Greater, Fair Value | 19,616 |
Twelve Months or Greater, Gross Unrealized Losses | (1,585) |
Total, Fair Value | 29,127 |
Total, Gross Unrealized Losses | (1,689) |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Note 6 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Less than Twelve Months, Fair Value | 1,075 | 18,082
Less than Twelve Months, Gross Unrealized Losses | (3) | (757)
Twelve Months or Greater, Fair Value | 20,334 | 5,248
Twelve Months or Greater, Gross Unrealized Losses | (490) | (271)
Total, Fair Value | 21,409 | 23,330
Total, Gross Unrealized Losses | $ (493) | $ (1,028)

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