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SHORT-TERM BORROWINGS (Tables)
 12 Months Ended
Dec. 31, 2020
Debt Disclosure [Abstract]  
Summary of the Use of Short-Term Borrowings The following table summarizes these short-term borrowings at and for the years ended December 31, 2020, 2019 and 2018.
202020192018
Balance at year-end$55,729 $146,600 $55,000 
Weighted average interest rate at year-end0.41 %1.87 %2.76 %
Average balance during the year$138,310 $23,171 $71,457 
Average interest rate during the year0.67 %2.20 %2.09 %
Maximum month-end balance during the year$178,729 $146,600 $103,000 
Summary of the Use of Securities Sold Under Agreements to Repurchase The following table provides additional details for repurchase agreements at and for the years ended December 31, 2020, 2019 and 2018.
202020192018
Balance at year-end$19,466 $8,269 $9,069 
Weighted average interest rate at year-end0.23 %1.31 %1.22 %
Average balance during the year$18,064 $8,830 $9,715 
Average interest rate during the year0.47 %1.28 %0.82 %
Maximum month-end balance during the year$24,403 $12,774 $14,591 
Fair value of securities underlying the agreements at year-end29,477 13,062 17,942