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Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value of Company's Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Participations sold | $ (27,064) | $ (34,974)
Commercial Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Participations sold | (27,064) | (9,217)
Subordinate Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Participations sold | 0 | (25,757)
Carrying Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Cash and cash equivalents | 343,106 | 325,498
Carrying Value | Level III |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Secured debt arrangements, net | (4,150,268) | (3,436,672)
Participations sold | (27,064) | (34,974)
Debt related To real estate owned, held for sale | 0 | (33,000)
Carrying Value | Level III | Secured Debt |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Senior secured term loans, net | (768,325) | (483,465)
Carrying Value | Level III | Senior Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Senior secured term loans, net | (494,051) | 0
Carrying Value | Level III | 2022 Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes | (343,117) | (340,361)
Carrying Value | Level III | 2023 Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes | (226,862) | (225,293)
Carrying Value | Level III | Commercial Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 7,012,312 | 5,451,084
Carrying Value | Level III | Subordinate Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 844,948 | 1,045,893
Estimate of Fair Value Measurement |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Cash and cash equivalents | 343,106 | 325,498
Estimate of Fair Value Measurement | Level III |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Secured debt arrangements, net | (4,150,268) | (3,436,672)
Participations sold | (27,064) | (34,919)
Debt related To real estate owned, held for sale | 0 | (33,000)
Estimate of Fair Value Measurement | Level III | Secured Debt |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Senior secured term loans, net | (782,995) | (475,263)
Estimate of Fair Value Measurement | Level III | Senior Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Senior secured term loans, net | (489,175) | 0
Estimate of Fair Value Measurement | Level III | 2022 Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes | (347,522) | (327,381)
Estimate of Fair Value Measurement | Level III | 2023 Notes |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Notes | (231,150) | (214,875)
Estimate of Fair Value Measurement | Level III | Commercial Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 6,945,038 | 5,361,948
Estimate of Fair Value Measurement | Level III | Subordinate Mortgage Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | $ 725,906 | $ 1,027,582

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition The aggregate amount of the participation liability at the end of the accounting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377297&loc=d3e10013-112621 + Details
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