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Note 10 - Borrowed Funds (Tables) | 12 Months Ended
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Dec. 31, 2013
Debt Disclosure [Abstract] |
Schedule Of Long Term Securities Sold Under Agreements To Repurchase [Table Text Block] |
(Dollars in millions) |  | Fixed-to-floating |  |  | Floating-to-fixed |  |  | Total |
Rate type |  | Float Rate |  |  | Fixed Rate |  |  |  |  |
Rate index |  | 8% minus 3 month LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum rate |  |  | 3.75 | % |  |  | 3.50 | % |  |  | 3.50 | % |  |  |  |  |  |  |  |  |  |  |  |
Minimum rate |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |  |  |  |  |  |  |  |  |  |  |
No. of agreements |  |  | 1 |  |  |  | 2 |  |  |  | 3 |  |  |  | 1 |  |  |  | 4 |  |  |  | 11 |
Amount |  | $ | 50.0 |  |  | $ | 100.0 |  |  | $ | 150.0 |  |  | $ | 100.0 |  |  | $ | 200.0 |  |  | $ | 600.0 |
Weighted average rate |  |  | 3.75 | % |  |  | 3.50 | % |  |  | 3.50 | % |  |  | 4.78 | % |  |  | 5.00 | % |  |  | 4.24 | %
Final maturity |  | 2014 |  |  | 2014 |  |  | 2015 |  |  | 2014 |  |  | 2017 |  |  |  |  |
Schedule of Repurchase Agreements [Table Text Block] |
Maturity |  | No. of Agreements |  |  | Amount (In thousands) |  |  | Weighted Average Interest Rate |
1 year to 3 years |  |  | 1 |  |  | $ | 50,000 |  |  |  | 2.69 | %
3 years to 5 years |  |  | 3 |  |  | $ | 150,000 |  |  |  | 2.81 | %
Total |  |  | 4 |  |  | $ | 200,000 |  |  |  | 2.78 | %
Summary Of Comparative Data Of Securities Sold Under Agreements To Repurchase [Table Text Block] |
|  | 2013 |  |  | 2012 |  |  | 2011 |
|  | (Dollars in thousands) |
Average amount outstanding during the year (1) |  | $ | 972,329 |  |  | $ | 1,361,475 |  |  | $ | 1,448,363 |
Maximum amount outstanding at month-end (2) |  |  | 1,200,000 |  |  |  | 1,400,000 |  |  |  | 1,559,000 |
Balance, December 31 |  |  | 800,000 |  |  |  | 1,250,000 |  |  |  | 1,400,000 |
Rate, December 31 |  |  | 3.87 | % |  |  | 3.84 | % |  |  | 4.14 | %
Weighted average interest rate for the year |  |  | 3.88 | % |  |  | 4.09 | % |  |  | 4.19 | %
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block] |
|  | 2013 |  |  | 2012 |
Maturity |  | Amount (In thousands) |  |  | Weighted Average Interest Rate |  |  | Amount (In thousands) |  |  | Weighted Average Interest Rate |
Within 90 days |  | $ | 475,000 |  |  |  | 0.06 | % |  | $ | 125,000 |  |  |  | 0.28 | %
4 - 5 years |  |  | 46,200 |  |  |  | 1.24 | % |  |  | 21,200 |  |  |  | 1.38 | %
|  | $ | 521,200 |  |  |  | 0.17 | % |  | $ | 146,200 |  |  |  | 0.44 | %

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- Definition Tabular disclosure of advances by federal home loan bank by branch. + 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 -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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 + Details
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- Definition The entire disclosure for repurchase agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph m -Subparagraph 1 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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