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Note 9 - Securities Sold Under Agreements to Repurchase (Detail) - Callable Securities Sold Under Agreements to Repurchase (Callable [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013
No. of agreements | 18
Amount (in Dollars) | $ 950,000
Weighted average rate | 3.98%
Fixed to Floating One Hundred and Fifty Million With Three Agreements At Three Point Seven Nine Percent [Member] |
Maximum rate | 3.79%
Minimum rate | 0.00%
No. of agreements | 3
Amount (in Dollars) | 150,000
Weighted average rate | 3.78%
Final maturity | 2,014
Fixed To Floating Fifty Million With One Agreement At Three Point Five Three Percent Member |
Maximum rate | 3.53%
Minimum rate | 0.00%
No. of agreements | 1
Amount (in Dollars) | 50,000
Weighted average rate | 3.53%
Final maturity | 2,014
Fixed to Floating 3.5% With Four Agreements [Member] |
Maximum rate | 3.50%
Minimum rate | 0.00%
No. of agreements | 4
Amount (in Dollars) | 200,000
Weighted average rate | 3.50%
Final maturity | 2,014
Fixed To Floating One Hundred And Fifty Million With Three Agreements At Three Point Five Percent Member |
Maximum rate | 3.50%
Minimum rate | 0.00%
No. of agreements | 3
Amount (in Dollars) | 150,000
Weighted average rate | 3.50%
Final maturity | 2,015
Fixed to Floating Fifty Million at Three Point Five Three Percent Maturing in 2015 [Member] |
Maximum rate | 3.53%
Minimum rate | 0.00%
No. of agreements | 1
Amount (in Dollars) | 50,000
Weighted average rate | 3.53%
Final maturity | 2,015
Fixed to Floating At 3.25% [Member] |
Maximum rate | 3.25%
Minimum rate | 0.00%
No. of agreements | 1
Amount (in Dollars) | 50,000
Weighted average rate | 3.25%
Final maturity | 2,015
Floating to Fixed One Hundred Million [Member] |
No. of agreements | 1
Amount (in Dollars) | 100,000
Weighted average rate | 4.78%
Final maturity | 2,014
Floating to Fixed Rate Two Hundred Million at 5% [Member] |
No. of agreements | 4
Amount (in Dollars) | $ 200,000
Weighted average rate | 5.00%
Final maturity | 2,017

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- Definition Number Of Securities Sold Under Agreements To Repurchase + References No definition available. + Details
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- Definition Securities Sold Under Agreements To Repurchase, Maturity Year + References No definition available. + Details
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- Definition Securities Sold Under Agreements To Repurchase Weighted Average Interest Rate + References No definition available. + Details
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Data Type: | num:percentItemType
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- Definition Securities Sold Under Agreement To Repurchase Interest Rate Effective Percentage Rate Range Maximum + References No definition available. + Details
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- Definition Securities Sold Under Agreement To Repurchase Interest Rate Effective Percentage Rate Range Minimum + References No definition available. + Details
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- Definition The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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