Loans Held for Investment and the Allowance for Credit Losses - Schedule of Overall Statistics for Loan Portfolio (Parenthetical) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Abstract]
Non-consolidated senior interest outstanding	$ 132.0	$ 132.0
PIK interest	$ 4.2	$ 4.7
Percentage of loans subject to yield maintenance or other prepayment restrictions	20.60%
Percentage of loans open to repayment by borrower without penalty	79.40%

Loan commitment non-consolidated senior interest outstanding.

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- Definition

Percentage of loans open to repayment by borrower without penalty.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- References

No definition available.

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- Definition

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=121586364&loc=d3e3602-108585

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