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Securities (Restricted Equity Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]    
FRBSF stock $ 59,249 $ 58,330
FHLB stock 23,797 20,250
Total restricted equity securities $ 83,046 $ 78,580