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Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock
 12 Months Ended
Dec. 31, 2020
Federal Home Loan Bank Stock and Federal Reserve Bank Stock [Abstract]  
Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock Reserves on Deposit with the Federal Reserve Bank and Federal Bank Stock
The Bank is required to maintain reserves against customer deposits by keeping balances with the Federal Reserve. The cash balances at the Federal Reserve are classified as cash and cash equivalents. Additionally, as a member of the FHLB and FRB, we are required to hold shares of FHLB and FRB stock under the Bank's borrowing agreement. FHLB and FRB stock are recorded at cost as a component of other assets, and any cash dividends received are recorded as a component of other noninterest income.
The tables below provide information on the required reserve balances at the Federal Reserve, as well as shares held at the FHLB and FRB for the years ended and as of December 31, 2020 and 2019:
Year ended December 31,
(Dollars in thousands)20202019
Average required reserve balances at FRB San Francisco$82,461 $315,784 
December 31,
(Dollars in thousands)20202019
FHLB stock holdings$17,250 $17,250 
FRB stock holdings43,982 43,008