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Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value | $ 59,255 | $ 31,531
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses | (4,608) | (260)
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Fair Value | 15,092 |
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Gross Unrealized Losses | (1,386) |
Securities in Continuous Unrealized Loss Position Fair Value | 74,347 | 31,531
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses | (5,994) | (260)
US Government Agencies Debt Securities [Member] |  |
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value | 13,130 | 9,938
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses | (929) | (91)
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Fair Value | 7,166 |
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Gross Unrealized Losses | (732) |
Securities in Continuous Unrealized Loss Position Fair Value | 20,295 | 9,938
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses | (1,661) | (91)
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member] |  |
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value | 1,301 |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses | (38) |
Securities in Continuous Unrealized Loss Position Fair Value | 1,301 |
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses | (38) |
US States and Political Subdivisions Debt Securities [Member] | Tax-exempt [Member] |  |
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value | 26,743 |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses | (2,883) |
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Fair Value | 2,678 |
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Gross Unrealized Losses | (383) |
Securities in Continuous Unrealized Loss Position Fair Value | 29,421 |
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses | (3,267) |
US States and Political Subdivisions Debt Securities [Member] |  |
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | 9,240
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses |  | (104)
Securities in Continuous Unrealized Loss Position Fair Value |  | 9,240
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses |  | (104)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Note 3 - Investment Securities Available For Sale (Details) - Gross Unrealized Losses and Fair Value [Line Items] |  |
Securities in Continuous Unrealized Loss Position Less than Twelve Months Fair Value | 18,082 | 12,353
Securities in Continuous Unrealized Loss Position Less than Twelve Months Gross Unrealized Losses | (757) | (65)
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Fair Value | 5,248 |
Securities in Continuous Unrealized Loss Position Twelve Months or Greater Gross Unrealized Losses | (271) |
Securities in Continuous Unrealized Loss Position Fair Value | 23,330 | 12,353
Securities in Continuous Unrealized Loss Position Gross Unrealized Losses | $ (1,028) | $ (65)

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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + References 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=27724398&loc=d3e27290-111563 + Details
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