Loans and the Allowance for Credit Losses - Additional Information (Details)	Sep. 30, 2023 USD ($) Loan	Dec. 31, 2022 USD ($) Loan
Financing Receivable Modifications [Line Items]
Number Of Loans In Process Of Foreclosure \| Loan		0
Accrued interest receivable excluded from amortized cost and allowance for credit loss	$ 13,000,000	$ 11,600,000
Commitments to lend additional funds to borrowers whose loans were on non-accrual status	0	0
Loans 90 days or more past due and still accruing	$ 0	$ 0
One to Four Family Residential Property
Financing Receivable Modifications [Line Items]
Number Of Loans In Process Of Foreclosure \| Loan	4
Loans in process of foreclosure, carrying value	$ 1,700,000

Loans and leases receivable nonaccrual status commitment to lend.

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- Definition

Number of loans in process of foreclosure.

+ References

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- Definition

Amount of accounts receivable, classified as noncurrent, 90 days or more past due and still accruing.

+ References

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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

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- Definition

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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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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