Loans Receivable and Allowance for Credit Losses - Modifications of Outstanding Balance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Loans Modified as TDRs
Total	$ 31,475	$ 122,678
Term Extension
Loans Modified as TDRs
Total	15,151	58,099
Payment Delay
Loans Modified as TDRs
Total	14,547	28,810
Term Extension/ Payment Delay
Loans Modified as TDRs
Total	1,594	2,862
Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	32,724
Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	183	183
Commercial lending
Loans Modified as TDRs
Total	26,754	111,616
Commercial lending | Term Extension
Loans Modified as TDRs
Total	15,151	58,099
Commercial lending | Payment Delay
Loans Modified as TDRs
Total	11,603	20,793
Commercial lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	32,724
Commercial lending | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | Commercial and industrial (“C&I”)
Loans Modified as TDRs
Total	$ 13,285	$ 64,913
Modification as a % of Loan Class	0.08%	0.41%
Commercial lending | Commercial and industrial (“C&I”) | Term Extension
Loans Modified as TDRs
Total	$ 1,682	$ 44,120
Commercial lending | Commercial and industrial (“C&I”) | Payment Delay
Loans Modified as TDRs
Total	11,603	20,793
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”) | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Commercial lending | CRE
Loans Modified as TDRs
Total	$ 13,469	$ 46,703
Modification as a % of Loan Class	0.07%	0.23%
Commercial lending | CRE | Term Extension
Loans Modified as TDRs
Total	$ 13,469	$ 13,979
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	0	32,724
Commercial lending | CRE | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	0	0
Consumer lending
Loans Modified as TDRs
Total	4,721	11,062
Consumer lending | Single-family residential
Loans Modified as TDRs
Total	$ 4,204	$ 9,085
Modification as a % of Loan Class	0.03%	0.07%
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
Consumer lending | Payment Delay
Loans Modified as TDRs
Total	2,944	8,017
Consumer lending | Payment Delay | Single-family residential
Loans Modified as TDRs
Total	2,944	7,276
Consumer lending | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	1,594	2,862
Consumer lending | Term Extension/ Payment Delay | Single-family residential
Loans Modified as TDRs
Total	1,260	1,809
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 | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	183	183
Consumer lending | Rate Reduction /Payment Delay | Single-family residential
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs
Loans Modified as TDRs
Total	$ 517	$ 1,977
Modification as a % of Loan Class	0.03%	0.11%
Consumer lending | HELOCs | Term Extension
Loans Modified as TDRs
Total	$ 0	$ 0
Consumer lending | HELOCs | Payment Delay
Loans Modified as TDRs
Total	0	741
Consumer lending | HELOCs | Term Extension/ Payment Delay
Loans Modified as TDRs
Total	334	1,053
Consumer lending | HELOCs | Rate Reduction/ Term Extension
Loans Modified as TDRs
Total	0	0
Consumer lending | HELOCs | Rate Reduction /Payment Delay
Loans Modified as TDRs
Total	$ 183	$ 183