Loans Receivable and Allowance for Credit Losses - Modifications of Outstanding Balance (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Loans Modified as TDRs
Total	$ 65,966	$ 100,852
Term Extension
Loans Modified as TDRs
Total	13,475	33,624
Payment Delay
Loans Modified as TDRs
Total	18,851	32,862
Term Extension/ Payment Delay
Loans Modified as TDRs
Total	551	1,277
Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	32,791	32,791
Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	298	298
Commercial lending
Loans Modified as TDRs
Total	59,352	93,512
Commercial lending | Term Extension
Loans Modified as TDRs
Total	13,475	33,624
Commercial lending | Payment Delay
Loans Modified as TDRs
Total	12,788	26,799
Commercial lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	32,791	32,791
Commercial lending | Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	298	298
Commercial lending | Commercial and industrial (“C&I”)
Loans Modified as TDRs
Total	$ 26,561	$ 60,195
Modification as a % of Loan Class	0.17%	0.38%
Commercial lending | Commercial and industrial (“C&I”) | Term Extension
Loans Modified as TDRs
Total	$ 13,475	$ 33,098
Weighted average of loans (in years)	1 year 8 months 15 days	1 year 5 months 19 days
Commercial lending | Commercial and industrial (“C&I”) | Payment Delay
Loans Modified as TDRs
Total	$ 12,788	$ 26,799
Weighted average of loans (in years)	7 months 17 days	9 months 25 days
Commercial lending | Commercial and industrial (“C&I”) | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	$ 0	$ 0
Commercial lending | Commercial and industrial (“C&I”) | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Commercial lending | Commercial and industrial (“C&I”) | Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	298	298
Commercial lending | CRE
Loans Modified as TDRs
Total	$ 32,791	$ 33,317
Modification as a % of Loan Class	0.16%	0.17%
Commercial lending | CRE | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 526
Weighted average of loans (in years)	2 years 6 months	2 years 5 months 26 days
Commercial lending | CRE | Payment Delay
Loans Modified as TDRs
Total	$ 0	$ 0
Commercial lending | CRE | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | CRE | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	32,791	32,791
Commercial lending | CRE | Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending
Loans Modified as TDRs
Total	6,614	7,340
Consumer lending | Single-family residential
Loans Modified as TDRs
Total	$ 5,636	$ 5,636
Modification as a % of Loan Class	0.05%	0.05%
Consumer lending | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0
Consumer lending | Term Extension | Single-family residential
Loans Modified as TDRs
Total	$ 0	$ 0
Weighted average of loans (in years)	9 years 8 months 12 days	9 years 8 months 12 days
Consumer lending | Payment Delay
Loans Modified as TDRs
Total	$ 6,063	$ 6,063
Consumer lending | Payment Delay | Single-family residential
Loans Modified as TDRs
Total	$ 5,085	$ 5,085
Weighted average of loans (in years)	10 months 20 days	10 months 20 days
Consumer lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	$ 551	$ 1,277
Consumer lending | Term Extension/ Payment Delay | Single-family residential
Loans Modified as TDRs
Total	551	551
Consumer lending | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | Rate Reduction/ Term Extension | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | Principal Forgiveness/ Rate Reduction/ Term Extension | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs
Loans Modified as TDRs
Total	$ 978	$ 1,704
Modification as a % of Loan Class	0.05%	0.09%
Consumer lending | HELOCs | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0
Weighted average of loans (in years)		14 years 9 months
Consumer lending | HELOCs | Payment Delay
Loans Modified as TDRs
Total	$ 978	$ 978
Weighted average of loans (in years)	7 months 20 days	6 months 3 days
Consumer lending | HELOCs | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	$ 0	$ 726
Consumer lending | HELOCs | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs | Principal Forgiveness/ Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0