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Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2014
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Mar. 31, 2013
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|
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | $ (105,528) | $ 18,972 |
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | 5,801 | (16,662) |
| Gain (Loss) on Interest Rate Swap and Swaption Agreements | (90,452) | 91,680 |
| Gain (Loss) on Mortgage Loans Held-for-Sale | (3,181) | 14,323 |
| Trading Activity, Gains and Losses, Net | (100,144) | 2,597 |
|
Agency To-be-Announced Securities, Non-Risk Management [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | (4,701) | 403 |
|
Inverse Interest-Only Securities [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | 18,323 | 1,230 |
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Forward Purchase Commitment [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Mortgage Loans Held-for-Sale | (417) | 287 |
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Interest Rate Risk Associated with Available-for-Sale Securities, Mortgage Loans Held-for-Sale and Forward Purchase Commitments [Member] | Forward Contracts [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | (17,903) | (12,652) |
|
Interest Rate Risk Associated with Available-for-Sale Securities, Mortgage Loans Held-for-Sale and Forward Purchase Commitments [Member] | Options Held [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | (1,705) | 0 |
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Interest Rate Risk Associated with Available-for-Sale Securities, Mortgage Loans Held-for-Sale and Forward Purchase Commitments [Member] | Swap [Member]
|
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | 11,531 | 0 |
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Interest Rate Risk Associated with Available-for-Sale Securities, Mortgage Loans Held-for-Sale and Forward Purchase Commitments [Member] | Long [Member] | Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (6,776) | 0 |
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Interest Rate Risk Associated with Available-for-Sale Securities, Mortgage Loans Held-for-Sale and Forward Purchase Commitments [Member] | Short [Member] | Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | 16,566 | 0 |
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Interest Rate Risk Associated with U.S. Treasuries, TBAs and MSR [Member] | Total Return Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | (1,725) | 0 |
|
Interest Rate Risk Associated with U.S. Treasuries, TBAs and MSR [Member] | Long [Member] | Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (6,644) | (89) |
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Interest Rate Risk Associated with U.S. Treasuries, TBAs and MSR [Member] | Short [Member] | Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | 24,413 | 0 |
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Interest Rate Risk Associated with Borrowings [Member] | Interest Rate Swaption [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (112,558) | 17,971 |
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Interest Rate Risk Associated with Borrowings [Member] | Long [Member] | Interest Rate Swap [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments | (20,529) | 1,090 |
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Credit Risk Associated with Non-Agency RMBS and Mortgage Loans Held-for-Sale [Member] | Credit Default Swap, Selling Protection [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net | $ 1,981 | $ (5,643) |