Loans Receivable and Allowance for Credit Losses - Financial Effects of Loan Modifications (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2023
Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 26	$ 371
Commercial lending \| Commercial and industrial (“C&I”) \| Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 26	$ 371
Commercial lending \| Commercial and industrial (“C&I”) \| Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	3 years	1 year 4 months 28 days
Commercial lending \| Commercial and industrial (“C&I”) \| Payment Delay
Loans Modified as TDRs
Weighted average of loans (in years)	1 year 6 months 14 days	1 year 1 month 24 days
Commercial lending \| CRE
Loans Modified as TDRs
Weighted-Average Interest Rate Reduction		3.00%
Commercial lending \| CRE \| Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	1 year 29 days	2 years 1 month 2 days
Consumer lending \| Principal Forgiveness \| Single-family residential
Loans Modified as TDRs
Loan modification amount	$ 0	$ 0
Weighted-Average Interest Rate Reduction	0.00%	0.00%
Consumer lending \| Term Extension \| Single-family residential
Loans Modified as TDRs
Weighted average of loans (in years)	10 years	9 years 10 months 28 days
Consumer lending \| Payment Delay \| Single-family residential
Loans Modified as TDRs
Weighted average of loans (in years)	11 months 15 days	11 months 12 days
Consumer lending \| HELOCs \| Principal Forgiveness
Loans Modified as TDRs
Loan modification amount	$ 0	$ 0
Weighted-Average Interest Rate Reduction	0.50%	0.50%
Consumer lending \| HELOCs \| Term Extension
Loans Modified as TDRs
Weighted average of loans (in years)	16 years 8 months 4 days	15 years 4 months 9 days
Consumer lending \| HELOCs \| Payment Delay
Loans Modified as TDRs
Weighted average of loans (in years)	8 months 15 days	6 months 7 days

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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Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

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