Summary of Significant Accounting Policies - Loans Held for Investment and Allowance for Credit Losses on Loans (Details)	12 Months Ended
Dec. 31, 2023 USD ($)
Adoption of New Accounting Standards
Allowance for credit losses for non-PCD loans	$ 0
Allowance for credit loss written-off	$ 0

Amount of expense for allowance for credit loss on financing receivable transferred to held-for-investment classification.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481852/948-310-45-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration