Borrowed Funds (Schedule Of FHLB Repayment ) (Details) (Long-Term Borrowings [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Long-Term Borrowings [Member]
Debt Instrument [Line Items]
2012	$ 28,319
2013	26,102
2014	102
2015	175,102
2016	182,101
Thereafter	1,624,964
Total long-term FHLB advances	$ 2,036,690	$ 2,176,665

Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due after five years of the Balance Sheet date.

+ References+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due from four to five years of the Balance Sheet date.

+ References+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due from one to two years of the Balance Sheet date.

+ References+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due from three to four years of the Balance Sheet date.

+ References+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due from two to three years of the Balance Sheet date.

+ References+ Details

- Definition

Amount of Federal Home Loan Bank advances outstanding which are due within one year of the Balance Sheet date.

+ References+ Details