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Derivative Financial Instruments Part 1 (Details) (USD $) |  |  | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2012 Designated as Hedging Instrument [Member] Forward Contracts [Member] | Dec. 31, 2011 Designated as Hedging Instrument [Member] Forward Contracts [Member] | Sep. 30, 2012 Not Designated as Hedging Instrument [Member] | Sep. 30, 2011 Not Designated as Hedging Instrument [Member] | Sep. 30, 2012 Not Designated as Hedging Instrument [Member] | Sep. 30, 2011 Not Designated as Hedging Instrument [Member] | Sep. 30, 2012 Not Designated as Hedging Instrument [Member] Interest Rate Lock Commitments Member] | Dec. 31, 2011 Not Designated as Hedging Instrument [Member] Interest Rate Lock Commitments Member] | Sep. 30, 2012 Not Designated as Hedging Instrument [Member] Interest Rate Swap [Member] | Dec. 31, 2011 Not Designated as Hedging Instrument [Member] Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Off-balance sheet obligations |  | $ 391,500,000 | $ 199,500,000 |  |  |  |  | $ 254,600,000 | $ 117,500,000 |  |
Negative valuation adjustment |  | 7,500,000 | 2,200,000 |  |  |  |  |  |  |  |
Positive valuation adjustment |  |  |  |  |  |  |  | 4,300,000 | 702,000 |  |
Net negative ineffectiveness on MSR fair value |  |  |  | 1,800,000 |  | 2,700,000 |  |  |  |  |
Net positive ineffectiveness on MSR fair value |  |  |  |  | 2,800,000 |  | 4,800,000 |  |  |  |
Notional amount of mirror-image derivative contracts |  |  |  |  |  |  |  |  |  | 262,100,000 | 71,200,000
Termination value of derivatives |  |  |  |  |  |  |  |  |  | 5,500,000 | 1,800,000
Market value of posted collateral | 1,400,000 |  |  |  |  |  |  |  |  |  |
Aggregate notional amount of credit risk participation agreements | $ 10,100,000 |  |  |  |  |  |  |  |  |  |

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- Definition Monetary amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 + Details
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- Definition Amount of negative valuation adjustment on fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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- Definition Amount of net negative ineffectiveness from comparing the total hedge cost to the changes in fair value of Mortgage Servicing Rights derivative assets attributable to interest rate changes. + References No definition available. + Details
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- Definition Amount of net positive ineffectiveness from comparing the total hedge cost to the changes in fair value of Mortgage Servicing Rights derivative assets attributable to interest rate changes. + References No definition available. + Details
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- Definition Amount of positive valuation adjustment on fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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- Definition Termination value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to a provision from agreements with each of its derivative counterparties stating that the entity will be considered on default on its derivative obligations if the entity defaulted on payment of indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender. + References No definition available. + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44D -Subparagraph c -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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- Definition The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References No definition available. + Details
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- Definition Aggregate notional amount of credit risk derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959 + Details
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