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Short Term Borrowings	12 Months Ended
Short Term Borrowings	Dec. 31, 2020
Short Term Borrowings [Abstract]
Short Term Borrowings	11. Short Term Borrowings The Company had unused lines of credit available for short-term liquidity purposes of $1.3 billion at December 31, 2020 and 2019. Federal Funds purchased and advances are generally issued on an overnight basis. There were no advances from the FHLB at December 31, 2020 or 2019. There were no Federal Funds purchased or advances from the FRB at December 31, 2020 or 2019.