Borrowings and Subordinated Debentures - FHLB Secured Advances (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	5.06%	4.92%
Federal Home Loan Bank of San Francisco | Secured Debt
Debt Instrument [Line Items]
Line of Credit, Current	$ 1,100,000	$ 0
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.93%	0.00%
Federal Home Loan Bank of San Francisco | Secured Debt | More Than Eighteen (18) Months but Less Than Twenty-Four Months (24)
Debt Instrument [Line Items]
Line of Credit, Current	$ 150,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.59%
Federal Home Loan Bank of San Francisco | Secured Debt | More Than Twenty-Four (24) Months but Less Than Thirty-Six Months (36) | Advance #1
Debt Instrument [Line Items]
Line of Credit, Current	$ 150,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.63%
Federal Home Loan Bank of San Francisco | Secured Debt | More Than Twenty-Four (24) Months but Less Than Thirty-Six Months (36) | Advance #2
Debt Instrument [Line Items]
Line of Credit, Current	$ 150,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.63%
Federal Home Loan Bank of San Francisco | Secured Debt | More Than Twenty-Four (24) Months but Less Than Thirty-Six Months (36) | Advance #3
Debt Instrument [Line Items]
Line of Credit, Current	$ 150,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	4.39%
Federal Home Loan Bank of San Francisco | Secured Debt | More Than Twenty-Four (24) Months but Less Than Thirty-Six Months (36) | Federal Home Loan Bank, Advances, Callable Option
Debt Instrument [Line Items]
Line of Credit, Current	$ 500,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate	3.18%