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Derivative Instruments and Hedging Activities Schedule of Interest Rate Swaps Associated with TBA Contracts (Details) (Interest Rate Swaps Associated with TBA Contracts [Member], USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|
| Derivative [Line Items] | ||
| Derivative, Notional Amount | $ 500,000 | $ 175,000 |
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Derivative Maturity Over Four Years From Balance Sheet Date [Member]
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| Derivative [Line Items] | ||
| Derivative, Notional Amount | 175,000 | |
| Derivative, Average Fixed Interest Rate | 1.772% | |
| Derivative, Average Variable Interest Rate | 0.4196% | |
| Derivative, Weighted Average Remaining Maturity | 4.5778 | |
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Derivative Maturity Over Two And Within Three Years From Balance Sheet Date [Member]
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| Derivative [Line Items] | ||
| Derivative, Notional Amount | $ 500,000 | |
| Derivative, Average Fixed Interest Rate | 0.3988% | |
| Derivative, Average Variable Interest Rate | 0.35613% | |
| Derivative, Weighted Average Remaining Maturity | 1.775 |
| X | ||||||||||
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- Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The average time remaining until maturity on the group of derivatives identified. No definition available.
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- Definition
Average fixed interest rate related to the group of interest rate derivatives. No definition available.
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- Definition
Average variable interest rate related to the group of interest rate derivatives. No definition available.
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- Details
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