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Income Taxes - Schedule of Effective Income Tax Reconciliation (Details)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Effective Income Tax Rate Reconciliation, Percent      
Federal statutory income tax rate 21.00% 21.00% 21.00%
California franchise tax, net of federal tax benefit 7.90% 8.30% 8.40%
Tax exempt interest on municipal securities and loans (3.10%) (1.90%) (2.50%)
Tax exempt earnings on bank owned life insurance (1.50%) (0.40%) (1.00%)
Non-deductible acquisition related expenses 0.00% 0.00% 0.60%
Non-deductible executive compensation 0.00% 0.00% 0.40%
Low income housing and qualified zone academy bond tax credits (0.60%) (0.20%) (0.40%)
Stock-based compensation and excess tax deficiencies (benefits) 0.20% 0.00% (0.10%)
Other (0.30%) (0.20%) (0.40%)
Effective Tax Rate 23.60% 26.60% 26.00%