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Fair Value - Schedule of Fair Value Assets and Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Loans held for sale: |  |  |  |  |
Loans held for sale, at fair value |  | $ 276,581 | $ 401,120 | $ 410,335 | $ 503,753
Total Loans held for sale |  | 352,398 | 488,612 |  |
Financial liabilities: |  |  |  |  |
Match funded liabilities |  | 1,741,122 | 2,090,247 |  |
MSRs: |  |  |  |  |
Mortgage servicing rights, at fair value |  | 814,450 | 93,901 |  |
Total MSRs |  | 1,341,067 | 1,913,992 |  |
Carrying Value [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Total Loans held for sale |  | 352,398 | 488,612 |  |
Financing liabilities: |  |  |  |  |
Total Financing liabilities |  | 2,743,670 | 2,258,641 |  |
Other secured borrowings: |  |  |  |  |
Total Other secured borrowings |  | 1,290,431 | 1,733,691 |  |
MSRs: |  |  |  |  |
Total MSRs |  | 1,341,067 | 1,913,992 |  |
Carrying Value [Member] | Level 1 [Member] | Forward Mortgage Backed Securities Trades [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Forward MBS trades | [1] | 2,125 | (2,854) |  |
Carrying Value [Member] | Level 2 [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Loans held for sale, at fair value | [1] | 276,581 | 401,120 |  |
Other secured borrowings: |  |  |  |  |
Senior secured term loan | [2] | 932,797 | 1,273,219 |  |
Senior unsecured notes | [2] | 350,000 | 350,000 |  |
Carrying Value [Member] | Level 2 [Member] | Interest Rate Lock Commitments [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Interest Rate Lock Commitments (IRLCs) | [1] | 5,056 | 6,065 |  |
Carrying Value [Member] | Level 3 [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Loans held for sale, at lower of cost or fair value | [3] | 75,817 | 87,492 |  |
Loans held for investment - Reverse mortgages, at fair value | [1] | 2,097,192 | 1,550,141 |  |
Advances and match funded advances | [2] | 2,754,435 | 3,303,356 |  |
Receivables, net | [2] | 379,279 | 270,596 |  |
Mortgage-backed securities, at fair value | [1] | 8,157 | 7,335 |  |
Financial liabilities: |  |  |  |  |
Match funded liabilities | [2] | 1,741,122 | 2,090,247 |  |
Financing liabilities: |  |  |  |  |
HMBS-related borrowings, at fair value | [1] | 1,987,998 | 1,444,252 |  |
Financing liability - MSRs pledged | [1] | 581,219 | 614,441 |  |
Other | [2] | 174,453 | 199,948 |  |
Other secured borrowings: |  |  |  |  |
Other | [2] | 357,634 | 460,472 |  |
MSRs: |  |  |  |  |
Mortgage servicing rights, at fair value | [1] | 814,450 | 93,901 |  |
Mortgage servicing rights, at amortized cost | [2],[4] | 526,617 | 1,820,091 |  |
Carrying Value [Member] | Level 3 [Member] | Interest Rate Caps [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Interest rate caps | [1] | 155 | 567 |  |
Fair Value [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Total Loans held for sale |  | 352,398 | 488,612 |  |
Financing liabilities: |  |  |  |  |
Total Financing liabilities |  | 2,731,023 | 2,248,341 |  |
Other secured borrowings: |  |  |  |  |
Total Other secured borrowings |  | 1,290,848 | 1,658,699 |  |
MSRs: |  |  |  |  |
Total MSRs |  | 1,463,290 | 2,331,604 |  |
Fair Value [Member] | Level 1 [Member] | Forward Mortgage Backed Securities Trades [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Forward MBS trades | [1] | 2,125 | (2,854) |  |
Fair Value [Member] | Level 2 [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Loans held for sale, at fair value | [1] | 276,581 | 401,120 |  |
Other secured borrowings: |  |  |  |  |
Senior secured term loan | [2] | 933,214 | 1,198,227 |  |
Senior unsecured notes | [2] | 327,250 | 321,563 |  |
Fair Value [Member] | Level 2 [Member] | Interest Rate Lock Commitments [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Interest Rate Lock Commitments (IRLCs) | [1] | 5,056 | 6,065 |  |
Fair Value [Member] | Level 3 [Member] |  |  |  |  |
Loans held for sale: |  |  |  |  |
Loans held for sale, at lower of cost or fair value | [3] | 75,817 | 87,492 |  |
Loans held for investment - Reverse mortgages, at fair value | [1] | 2,097,192 | 1,550,141 |  |
Advances and match funded advances | [2] | 2,754,435 | 3,303,356 |  |
Receivables, net | [2] | 379,279 | 270,596 |  |
Mortgage-backed securities, at fair value | [1] | 8,157 | 7,335 |  |
Financial liabilities: |  |  |  |  |
Match funded liabilities | [2] | 1,741,122 | 2,090,247 |  |
Financing liabilities: |  |  |  |  |
HMBS-related borrowings, at fair value | [1] | 1,987,998 | 1,444,252 |  |
Financing liability - MSRs pledged | [1] | 581,219 | 614,441 |  |
Other | [2] | 161,806 | 189,648 |  |
Other secured borrowings: |  |  |  |  |
Other | [2] | 357,634 | 460,472 |  |
MSRs: |  |  |  |  |
Mortgage servicing rights, at fair value | [1] | 814,450 | 93,901 |  |
Mortgage servicing rights, at amortized cost | [2],[4] | 648,840 | 2,237,703 |  |
Fair Value [Member] | Level 3 [Member] | Interest Rate Caps [Member] |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |
Interest rate caps | [1] | $ 155 | $ 567 |  |
[1] | Measured at fair value on a recurring basis.
[2] | Disclosed, but not carried, at fair value.
[3] | Measured at fair value on a non-recurring basis.
[4] | The balance at June 30, 2015 includes our impaired government-insured stratum of amortization method MSRs, which is measured at fair value on a non-recurring basis. The carrying value of this stratum at June 30, 2015 was $143.7 million, net of a valuation allowance of $1.6 million.

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