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Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
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Jun. 30, 2013 | Dec. 31, 2012
Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses [Line Items] |  |
Less Than 12 Months - Fair Value | $ 8,427 | $ 2,018
Less Than 12 Months- Unrecognized Loss | (404) | (63)
12 Months or More - Fair Value | 242 | 260
12 Months or More - Unrecognized Loss | (21) | (2)
Total - Fair Value | 8,669 | 2,278
Total - Unrecognized Loss | (425) | (65)
US States and Political Subdivisions Debt Securities [Member] |  |
Note 3 - Securities (Details) - Securities Held to Maturity with Unrealized Losses [Line Items] |  |
Less Than 12 Months - Fair Value | 8,427 | 2,018
Less Than 12 Months- Unrecognized Loss | (404) | (63)
12 Months or More - Fair Value | 242 | 260
12 Months or More - Unrecognized Loss | (21) | (2)
Total - Fair Value | 8,669 | 2,278
Total - Unrecognized Loss | $ (425) | $ (65)

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- Definition Amount of unrealized loss on investments in held-to-maturity securities 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 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: 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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- Definition Amount of unrealized loss on investments in held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: 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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- Definition Amount of unrealized loss before deducting unrealized gain on investments in held-to-maturity securities that have been in a loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: 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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