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Note 9 - Borrowed Funds (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Securities Sold under Agreements to Repurchase (in Dollars) | $ 700,000,000 | $ 800,000,000
Weighted Average Rate Of Securities Sold Under Agreements | 3.92% | 3.87%
Prepaid Security Sold Under Repurchase Agreement (in Dollars) | 100,000,000 | 450,000,000
Rate of Prepaid Security Sold Under Repurchase Agreements | 3.50% | 3.79%
Prepayment Penalty Security Sold Under Agreements To Repurchase (in Dollars) | 3,400,000 | 22,600,000
Number Of Fixed-To-Floating Security Sold Under Agreements To Repurchase | 4 |
Total Fixed To Floating Rate Agreements (in Dollars) | 200,000,000 |
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum | 0.00% |
Advances from Federal Home Loan Banks (in Dollars) | 636,200,000 | 521,200,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate | 0.30% | 0.17%
Securities Sold Under Agreements to Repurchase Minimum [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 1.00% |
Securities Sold Under Agreements to Repurchase Maximum Initial Rate [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.50% |
Securities Sold under Agreements to Repurchase [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |
Securities Sold under Agreements to Repurchase [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Basis Spread on Variable Rate | 3.40% |
Floating to Fixed Rate Agreements Totaling $300 Million [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Number Of Floating-To-Fixed Rate Agreements | 5 |
Total Floating To Fixed Rate (in Dollars) | 300,000,000 |
Floating to Fixed Rate Agreements Totaling $300 Million [Member] | Minimum [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.78% |
Floating to Fixed Rate Agreements Totaling $300 Million [Member] | Maximum [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.07% |
Securities Sold under Agreements to Repurchase [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Investment Securities Pledged As Collateral (in Dollars) | 808,000,000 | 906,100,000
Callable Securities [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Securities Sold under Agreements to Repurchase (in Dollars) | $ 500,000,000 |
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Basis Spread on Variable Rate | 3.50% |
Minimum [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% |
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Note 9 - Borrowed Funds (Details) [Line Items] |  |
Debt Instrument, Basis Spread on Variable Rate | 3.75% |

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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Describes the weighted average interest rate applicable to the specific advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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