Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2021
Variable Interest Entity [Line Items]
Accrued expenses and other liabilities	$ 206,023	$ 203,962
Heritage Oaks Bank | Junior Subordinated Debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument			$ 5,200
Santa Lucia Bancorp (CA) Capital Trust | Junior Subordinated Debt
Variable Interest Entity [Line Items]
Redeemed amount of debt instrument			$ 5,200
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum Loss	$ 168,216	200,769
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization, Liability
Variable Interest Entity [Line Items]
Maximum loss, percentage of loans	10.00%
Maximum Loss	$ 50,901	50,901
Variable Interest Entity, Not Primary Beneficiary | Multifamily Loan Securitization
Variable Interest Entity [Line Items]
Accrued expenses and other liabilities	$ 334	$ 338