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Fair Value - Schedule of Fair Value Assets and Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Loans held for sale |  |  |  |  |  |
Loans held for sale, at fair value | $ 253,037 |  | $ 208,752 | $ 135,691 |  | $ 176,525
Financial liabilities: |  |  |  |  |  |
Advance match funded liabilities | 612,650 |  | 679,109 |  |  |
HMBS-related borrowings | 6,477,616 |  | 6,063,435 |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | 594,222 |  | 972,595 |  |  |
Total Financing liabilities | 7,071,838 |  | 7,036,030 |  |  |
Other secured borrowings: |  |  |  |  |  |
Other secured borrowings, net (amounts related to VIEs $200,006 and $240,893) | 847,331 |  | 1,025,791 |  |  |
Senior Notes [Abstract] |  |  |  |  |  |
Senior notes, net | 311,484 |  | 311,085 |  |  |
Mortgage servicing rights |  |  |  |  |  |
Mortgage servicing rights, at fair value | 1,044,914 | $ 1,050,228 | 1,486,395 | $ 1,312,633 | $ 1,400,191 | $ 1,457,149
Carrying Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Total Loans held for sale | 278,517 |  | 275,269 |  |  |
Loans held for investment | 6,730,656 |  | 6,292,938 |  |  |
Financing liabilities: |  |  |  |  |  |
Total Financing liabilities | 7,071,838 |  | 7,036,030 |  |  |
Other secured borrowings: |  |  |  |  |  |
Other secured borrowings, net (amounts related to VIEs $200,006 and $240,893) | 847,331 |  | 1,025,791 |  |  |
Senior Notes [Abstract] |  |  |  |  |  |
Senior notes, net | 311,484 |  | 311,085 |  |  |
Fair Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Total Loans held for sale | 278,517 |  | 275,269 |  |  |
Loans held for investment | 6,730,656 |  | 6,292,938 |  |  |
Financing liabilities: |  |  |  |  |  |
Total Financing liabilities | 7,071,838 |  | 7,036,030 |  |  |
Other secured borrowings: |  |  |  |  |  |
Other secured borrowings, net (amounts related to VIEs $200,006 and $240,893) | 801,426 |  | 1,010,789 |  |  |
Senior Notes [Abstract] |  |  |  |  |  |
Senior notes, net | 235,041 |  | 270,022 |  |  |
Level 2 | Carrying Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for sale, at fair value | 253,037 |  | 208,752 |  |  |
Corporate bonds | 211 |  | 441 |  |  |
Other secured borrowings: |  |  |  |  |  |
Senior secured term loan | 187,986 |  | 322,758 |  |  |
Senior Notes [Abstract] |  |  |  |  |  |
Senior unsecured notes | 21,205 |  | 21,046 |  |  |
Senior secured notes | 290,279 |  | 290,039 |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Interest rate lock commitments |  |  | 4,878 |  |  |
Level 2 | Fair Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for sale, at fair value | 253,037 |  | 208,752 |  |  |
Corporate bonds | 211 |  | 441 |  |  |
Other secured borrowings: |  |  |  |  |  |
Senior secured term loan | 172,121 |  | 324,643 |  |  |
Senior Notes [Abstract] |  |  |  |  |  |
Senior unsecured notes | 12,765 |  | 13,821 |  |  |
Senior secured notes | 222,276 |  | 256,201 |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Interest rate lock commitments |  |  | 4,878 |  |  |
Level 3 | Carrying Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for sale, at lower of cost or fair value | 25,480 |  | 66,517 |  |  |
Loans held for investment | 6,718,992 |  | 6,269,596 |  |  |
Advances (including match funded) | 901,009 |  | 1,056,523 |  |  |
Receivables, net | 247,616 |  | 201,220 |  |  |
Mortgage-backed securities, at fair value | 1,726 |  | 2,075 |  |  |
Financial liabilities: |  |  |  |  |  |
Advance match funded liabilities | 612,650 |  | 679,109 |  |  |
HMBS-related borrowings | 6,477,616 |  | 6,063,435 |  |  |
Other secured borrowings: |  |  |  |  |  |
Other | 659,345 |  | 703,033 |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Interest rate lock commitments | 17,818 |  |  |  |  |
Mortgage servicing rights |  |  |  |  |  |
Mortgage servicing rights, at fair value | 1,044,914 |  | 1,486,395 |  |  |
Level 3 | Fair Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for sale, at lower of cost or fair value | 25,480 |  | 66,517 |  |  |
Loans held for investment | 6,718,992 |  | 6,269,596 |  |  |
Advances (including match funded) | 901,009 |  | 1,056,523 |  |  |
Receivables, net | 247,616 |  | 201,220 |  |  |
Mortgage-backed securities, at fair value | 1,726 |  | 2,075 |  |  |
Financial liabilities: |  |  |  |  |  |
Advance match funded liabilities | 617,950 |  | 679,507 |  |  |
HMBS-related borrowings | 6,477,616 |  | 6,063,435 |  |  |
Other secured borrowings: |  |  |  |  |  |
Other | 629,305 |  | 686,146 |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Interest rate lock commitments | 17,818 |  |  |  |  |
Mortgage servicing rights |  |  |  |  |  |
Mortgage servicing rights, at fair value | 1,044,914 |  | 1,486,395 |  |  |
Level 1 | Carrying Value |  |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Forward trades - Loans held for sale | (1,017) |  | (92) |  |  |
TBA / Forward mortgage-backed securities (MBS) trades and futures - MSR hedging | 5,019 |  | 1,121 |  |  |
Level 1 | Fair Value |  |  |  |  |  |
Derivative financial instruments assets (liabilities): |  |  |  |  |  |
Forward trades - Loans held for sale | (1,017) |  | (92) |  |  |
TBA / Forward mortgage-backed securities (MBS) trades and futures - MSR hedging | 5,019 |  | 1,121 |  |  |
Loans Held for Investment Securitization Trusts | Level 3 | Carrying Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for investment | 11,664 |  | 23,342 |  |  |
Loans Held for Investment Securitization Trusts | Level 3 | Fair Value |  |  |  |  |  |
Loans held for sale |  |  |  |  |  |
Loans held for investment | 11,664 |  | 23,342 |  |  |
Financing Liability - MSRs Pledged |  |  |  |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | 582,558 |  | 950,593 |  |  |
Financing Liability - MSRs Pledged | Level 3 | Carrying Value |  |  |  |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | 582,558 |  | 950,593 |  |  |
Financing Liability - MSRs Pledged | Level 3 | Fair Value |  |  |  |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | 582,558 |  | 950,593 |  |  |
Financing Liability Owed to Securitization Investors | Level 3 | Carrying Value |  |  |  |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | 11,664 |  | 22,002 |  |  |
Financing Liability Owed to Securitization Investors | Level 3 | Fair Value |  |  |  |  |  |
Financing liabilities: |  |  |  |  |  |
Other financing liabilities, at fair value | $ 11,664 |  | $ 22,002 |  |  |

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- Definition Fair value as of the balance sheet date of forward mortgage-backed securities trades, which provides economic hedge against those changes in fair value on mortgage loans from the date of closing loans with borrowers to the date till those loans are sold in secondary market. + References No definition available. + Details
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- Definition This represents the amount of liability which is a resultant of reverse mortgage loans sold into the secondary with servicing rights retained. As the transfer of these loans do not meet the definition of participating interest because of the servicing requirement that requires the issuer to absorb some level of risk, these transfers are accounted for as financing. + References No definition available. + Details
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loans held-for-sale at lower cost of fair value as presented on the statement of financial position which may include mortgage loans held-for-sale, finance receivables held-for-sale, or any other loans classified as held-for-sale which are due the Company as of the balance sheet date. + References No definition available. + Details
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- Definition This element represents the home equity conversion mortgages insured by FHA. + References No definition available. + Details
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Fair value of firm holdings in corporate fixed income securities. Includes pledged and unpledged holdings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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- Definition Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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