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Short-term Borrowings
 12 Months Ended
Dec. 31, 2021
Short-term Debt [Abstract]  
Short-term Borrowings Short-term Borrowings
Short-term borrowings at December 31 were as follows:
 202120202019
 Ending
Balance		Average
Balance		Average
Rate		Ending
Balance		Average
Balance		Average
Rate		Ending
Balance		Average
Balance		Average
Rate
 (dollars in thousands)
Federal funds purchased$— $— — %$— $4,147 1.06 %$— $8,069 2.53 %
Borrowings from FHLB— — — — 28,252 1.54 136,200 278,930 2.62 
Securities sold under agreements to repurchase138,315 119,801 0.08 117,373 110,235 0.21 65,653 104,548 0.75 
Total$138,315 $119,801 0.08 $117,373 $142,634 0.49 $201,853 $391,547 2.12 
Maximum total at any month-end$138,315 $248,471 $670,831 
Weighted average rate at year-end0.06 %0.10 %1.41 %
Interest expense on short-term borrowings for the years ended December 31 is detailed below:
202120202019
 (dollars in thousands)
Federal funds purchased$— $44 $204 
Borrowings from FHLB— 434 7,313 
Securities sold under agreements to repurchase99 226 781 
Total interest on short-term borrowings$99 $704 $8,298