BORROWED FUNDS - Summary of Borrowed Funds by Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Federal funds purchased
Debt Instrument [Line Items]
Borrowed funds balance		$ 0
Weighted Average Interest Rate		0.00%
Maximum Outstanding at Month End During the Period		$ 0
Average Amount Outstanding During the Year		$ 736
Weighted Average Interest Rate During the Year		2.76%
Trust preferred borrowings
Debt Instrument [Line Items]
Borrowed funds balance	$ 90,295	$ 67,011	$ 67,011
Weighted Average Interest Rate	2.47%	1.96%
Maximum Outstanding at Month End During the Period	$ 90,295	$ 67,011
Average Amount Outstanding During the Year	$ 90,263	$ 67,011
Weighted Average Interest Rate During the Year	2.30%	1.96%
Senior and subordinated debt
Debt Instrument [Line Items]
Borrowed funds balance	$ 248,488		147,939
Weighted Average Interest Rate	3.27%
Maximum Outstanding at Month End During the Period	$ 248,566
Average Amount Outstanding During the Year	$ 248,565
Weighted Average Interest Rate During the Year	3.10%
Senior debt
Debt Instrument [Line Items]
Borrowed funds balance		$ 246,734
Weighted Average Interest Rate		3.45%
Maximum Outstanding at Month End During the Period		$ 246,734
Average Amount Outstanding During the Year		$ 245,654
Weighted Average Interest Rate During the Year		3.67%
Other borrowed funds
Debt Instrument [Line Items]
Borrowed funds balance	$ 33,619	$ 21,456	$ 24,527
Weighted Average Interest Rate	0.10%	0.10%
Maximum Outstanding at Month End During the Period	$ 37,941	$ 21,456
Average Amount Outstanding During the Year	$ 38,396	$ 19,656
Weighted Average Interest Rate During the Year	0.10%	0.10%