Loans Receivable and Allowance for Credit Losses - Schedule of Financial Effects of Loan Modifications (Details)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Commercial Lending | C&I | Weighted-average Term Extension (in years)
Loans Modified
Weighted average of loans (in years)	1 year 1 month 6 days	1 year 1 month 6 days
Commercial Lending | C&I | Weighted-average Payment Delay (in years)
Loans Modified
Weighted average of loans (in years)	0 years	1 year
Commercial Lending | CRE | Weighted-average Term Extension (in years)
Loans Modified
Weighted average of loans (in years)	1 year 1 month 6 days	5 years
Commercial Lending | CRE | Weighted-average Payment Delay (in years)
Loans Modified
Weighted average of loans (in years)	0 years	0 years
Commercial Lending | Land and construction | Weighted-average Term Extension (in years)
Loans Modified
Weighted average of loans (in years)	0 years	0 years
Commercial Lending | Land and construction | Weighted-average Payment Delay (in years)
Loans Modified
Weighted average of loans (in years)	8 months 12 days	0 years
Consumer Lending | Single-family residential (“SFR”) | Weighted-average Term Extension (in years)
Loans Modified
Weighted average of loans (in years)	0 years	10 years
Consumer Lending | Single-family residential (“SFR”) | Weighted-average Payment Delay (in years)
Loans Modified
Weighted average of loans (in years)	6 months	1 year
Consumer Lending | HELOCs | Weighted-average Term Extension (in years)
Loans Modified
Weighted average of loans (in years)	0 years	17 years 7 months 6 days
Consumer Lending | HELOCs | Weighted-average Payment Delay (in years)
Loans Modified
Weighted average of loans (in years)	1 year 1 month 6 days	15 years 4 months 24 days