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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: 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

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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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- Definition

Amount of loan granted for unusual risk forbearance.

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- Definition

Annualized charge rate of non performing loans.

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- Definition

Cash basis interest income recognized on nonaccrual loans.

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- Definition

Financing receivable, individually evaluated, without allowance for credit loss average recorded investment.

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Financing receivables due to unusual risk and uncertainty.

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- Definition

Loans Held For Investment Unpaid Principal Balance Nonperforming and Nonaccrual Percentage.

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Loans Held For Investment Unpaid Principal Balance Performing and Accruing Percentage.

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Loans Held for Investment at Amortized Cost and Loans Held for Investment at Fair Value - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		66 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Dec. 31, 2024	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Accrued interest income recognized on nonaccrual loans			$ 0	$ 0
Cash basis interest income recognized on nonaccrual loans	$ 12,200,000	$ 9,800,000	34,700,000	25,500,000
Average recorded investment of individually evaluated loans, computed using month-end balances	270,200,000	$ 323,400,000	286,600,000	$ 323,700,000
COVID-19
Accounts Notes And Loans Receivable [Line Items]
Loans	130,600,000		$ 130,600,000		$ 130,600,000	$ 144,200,000
90+days
Accounts Notes And Loans Receivable [Line Items]
Annualized charge rate of non performing loans			1.62%	0.44%
COVID 19 Forbearance Program
Accounts Notes And Loans Receivable [Line Items]
Amount of loan granted for unusual risk forbearance	$ 280,600,000		$ 280,600,000		280,600,000		$ 414,400,000
Accrued interest income recognized on nonaccrual loans			$ 6,600,000		$ 16,300,000
Loans held for investment unpaid principal balance performing and accruing, percentage	75.60%		75.60%		75.60%	72.00%
Loans held for investment unpaid principal balance nonperforming and nonaccrual percentage	24.40%		24.40%		24.40%	28.00%