Loans Held for Investment and the Allowance for Credit Losses - Schedule of Overall Statistics for Loan Held for Investment Portfolio (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Loans And Leases Receivable Disclosure [Line Items]
Non-consolidated senior interest outstanding	$ 132,000	$ 132,000
PIK interest	2,700	3,000
Loan commitment	$ 5,593,350	$ 5,411,944
Percentage of loans subject to yield maintenance or other prepayment restrictions	42.00%
Percentage of loans open to repayment by borrower without penalty	58.00%
Secured Overnight Financing Rate
Loans And Leases Receivable Disclosure [Line Items]
Percentage of loan commitment subject to benchmark interest rate	4.20%
Loan commitment	$ 200,000
LIBOR
Loans And Leases Receivable Disclosure [Line Items]
Percentage of loan commitment subject to benchmark interest rate	95.80%
Loan commitment	$ 5,400,000

Loan commitment non-consolidated senior interest outstanding.

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Percentage of loan commitment subject to benchmark interest rate.

+ References

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Percentage of loans open to repayment by borrower without penalty.

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Percentage of loans subject to yield maintenance or other prepayment restrictions.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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