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Note 5 - Securities (Details) - Available for Sale Securities (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Available for Sale: |  |
Amortized Costs | $ 217,370 | $ 186,667
Gross Unrealized Gains | 1,693 | 3,946
Gross Unrealized Losses | 13,115 | 798
Fair Values | 205,948 | 189,815
US Treasury Securities [Member] |  |
Available for Sale: |  |
Amortized Costs | 2,002 | 2,005
Gross Unrealized Gains | 30 | 68
Gross Unrealized Losses | 0 | 0
Fair Values | 2,032 | 2,073
US Government Agencies [Member] |  |
Available for Sale: |  |
Amortized Costs | 173,812 | 128,805
Gross Unrealized Gains | 355 | 1,381
Gross Unrealized Losses | 12,381 | 622
Fair Values | 161,786 | 129,564
Mortgage-backed Securities [Member] |  |
Available for Sale: |  |
Amortized Costs | 3,324 | 4,202
Gross Unrealized Gains | 257 | 367
Gross Unrealized Losses | 0 | 0
Fair Values | 3,581 | 4,569
States and Political Subdivisions [Member] |  |
Available for Sale: |  |
Amortized Costs | 27,080 | 35,029
Gross Unrealized Gains | 906 | 1,753
Gross Unrealized Losses | 99 | 3
Fair Values | 27,887 | 36,779
Corporate Securities [Member] |  |
Available for Sale: |  |
Amortized Costs | 8,807 | 14,207
Gross Unrealized Gains | 135 | 368
Gross Unrealized Losses | 504 | 0
Fair Values | 8,438 | 14,575
Other Securities [Member] |  |
Available for Sale: |  |
Amortized Costs | 2,345 | 2,419
Gross Unrealized Gains | 10 | 9
Gross Unrealized Losses | 131 | 173
Fair Values | $ 2,224 | $ 2,255

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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