FAIR VALUE OF FINANCIAL INSTRUMENTS- Carrying values and fair value (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets
Accrued interest receivable	$ 19,470	$ 23,545
Liabilities
Trust preferred debentures	49,374	48,814
Level 1
Assets
Cash and due from banks	673,297	337,080
Federal funds sold	7,074	4,560
Loans, net	0	0
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term borrowings	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Trust preferred debentures	0	0
Accrued interest payable	0	0
Level 2
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Loans, net	0	0
Accrued interest receivable	19,470	23,545
Liabilities
Deposits	6,109,077	5,108,360
Short-term borrowings	76,803	68,957
FHLB and other borrowings	317,464	807,493
Subordinated debt	148,386	176,504
Trust preferred debentures	57,827	50,165
Accrued interest payable	2,848	4,441
Level 3
Assets
Cash and due from banks	0	0
Federal funds sold	0	0
Loans, net	5,221,886	5,006,223
Accrued interest receivable	0	0
Liabilities
Deposits	0	0
Short-term borrowings	0	0
FHLB and other borrowings	0	0
Subordinated debt	0	0
Trust preferred debentures	0	0
Accrued interest payable	0	0
Carrying Amount
Assets
Cash and due from banks	673,297	337,080
Federal funds sold	7,074	4,560
Loans, net	5,173,739	5,042,888
Accrued interest receivable	19,470	23,545
Liabilities
Deposits	6,110,648	5,101,016
Short-term borrowings	76,803	68,957
FHLB and other borrowings	310,171	779,171
Subordinated debt	139,091	169,795
Trust preferred debentures	49,374	48,814
Accrued interest payable	2,848	4,441
Fair Value
Assets
Cash and due from banks	673,297	337,080
Federal funds sold	7,074	4,560
Loans, net	5,221,886	5,006,223
Accrued interest receivable	19,470	23,545
Liabilities
Deposits	6,109,077	5,108,360
Short-term borrowings	76,803	68,957
FHLB and other borrowings	317,464	807,493
Subordinated debt	148,386	176,504
Trust preferred debentures	57,827	50,165
Accrued interest payable	$ 2,848	$ 4,441