SHORT-TERM BORROWINGS (Summary of Short-term Borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Short-term borrowings	$ 167,872	$ 182,626
Retail repurchase agreements
Short-term Debt [Line Items]
Short-term borrowings	118,293	84,486
Federal funds purchased
Short-term Debt [Line Items]
Short-term borrowings	2,100	2,450
Advances from the FHLB
Short-term Debt [Line Items]
Short-term borrowings	0	81,198
Advances from the federal discount window
Short-term Debt [Line Items]
Short-term borrowings	35,000	0
Other short-term borrowings
Short-term Debt [Line Items]
Short-term borrowings	$ 12,479	$ 14,492