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SHORT-TERM BORROWINGS (Tables)
12 Months Ended
Dec. 31, 2021
Short-term Debt [Abstract]  
Schedule of short-term borrowings
A summary of our short-term borrowings as of December 31, 2021, 2020 and 2019 is as follows:
 
 Year Ended December 31,
(Dollars in thousands)202120202019
Amount outstanding at December 31$— $22,000 $150,000 
Average amount outstanding during year607 89,904 185,909 
Highest month-end balance during year6,500 222,000 334,500 
Weighted-average interest rate on balances outstanding at December 31— %0.29 %1.81 %
Weighted-average interest rate during year0.30 %0.80 %2.31 %