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Summary of Significant Accounting Policies - Narrative Details (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Accounting Policies [Abstract] |  |  |  |  |
Goodwill | $ 0 |  | $ 0 |  | $ 25,222
Impairment of goodwill | 0 | $ 0 | (25,222) | $ 0 |
Restricted cash included in receivables and other assets | 54,802 | $ 932 | 54,802 | $ 932 | 2,800
Residential loans receivable | 36,700 |  | 36,700 |  | 41,200
Operating lease right-of-use asset | 10,400 |  | 10,400 |  | 9,300
Operating lease liabilities | $ 11,000 |  | $ 11,000 |  | $ 9,800
Residential loans, delinquency period |  |  | 90 days |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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