Loans Receivable and Allowance for Credit Losses - Schedule of Amortized Cost of Loans on Nonaccrual Status with No Related Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	$ 83,718	$ 93,414
Commercial Lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	66,977	83,238
Commercial Lending | C&I
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	14,769	21,723
Commercial Lending | CRE
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	32,874	33,705
Commercial Lending | Construction and land
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	19,334	27,810
Consumer Lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	16,741	10,176
Consumer Lending | Single-family residential (“SFR”)
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	8,828	6,095
Consumer Lending | Home equity lines of credit (“HELOCs”)
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related ALLL	$ 7,913	$ 4,081