LOANS AND ALLOWANCE FOR CREDIT LOSSES - Carrying Amounts of Loans Purchased and Sold (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Carrying Amounts of Loans Purchased and Sold
Purchases	$ 0
Sales	2,627
Commercial Portfolio Segment | Business Lending
Carrying Amounts of Loans Purchased and Sold
Purchases	0
Sales	0
Residential Portfolio Segment | Consumer Mortgage
Carrying Amounts of Loans Purchased and Sold
Purchases	0
Sales	2,627
Consumer Portfolio Segment | Consumer Indirect
Carrying Amounts of Loans Purchased and Sold
Purchases	0
Sales	0
Consumer Portfolio Segment | Consumer Direct
Carrying Amounts of Loans Purchased and Sold
Purchases	0
Sales	0
Consumer Portfolio Segment | Home Equity
Carrying Amounts of Loans Purchased and Sold
Purchases	0
Sales	$ 0