Loans Receivable and Allowance for Credit Losses - Amortized Cost of Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	$ 113,186	$ 72,085
Commercial lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	91,519	59,977
Commercial lending | Commercial and industrial (“C&I”)
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	40,617	33,089
Commercial lending | CRE
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	34,431	22,653
Commercial lending | Real estate loan | Multifamily residential
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	4,235	4,235
Commercial lending | Construction and land
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	12,236	0
Consumer lending
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	21,667	12,108
Consumer lending | Real estate loan | Single-family residential
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	15,380	4,852
Consumer lending | HELOCs
Financing Receivable, Nonaccrual [Line Items]
Total nonaccrual loans with no related allowance for loan losses	$ 6,287	$ 7,256