DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of financial instruments fair value (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Subordinated debentures
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 25,774	$ 25,774
Carrying Amount	$ 25,774	$ 25,774
Hierarchy Level	3	3
Subordinated notes
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 70,500	$ 72,000
Carrying Amount	$ 74,430	$ 74,281
Hierarchy Level	2	2
Deposits
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 4,809,378	$ 4,672,913
Carrying Amount	$ 4,824,571	$ 4,684,910
Hierarchy Level	3	3
Short-term Debt
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 131,367	$ 266,426
Carrying Amount	$ 131,367	$ 266,426
Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Commitments to originate loans
Fair value of respective financial instruments could be sold individually or in the aggregate
Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Letters of credit
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 54	$ 73
Carrying Amount	$ 54	$ 73
Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Lines of credit
Fair value of respective financial instruments could be sold individually or in the aggregate
Hierarchy Level	3	3
Interest payable
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 5,026	$ 3,010
Carrying Amount	$ 5,026	$ 3,010
Hierarchy Level	3	3
Loans, net of allowance for credit losses
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 4,358,355	$ 4,391,084
Carrying Amount	$ 4,516,613	$ 4,506,836
Hierarchy Level	3	3
Cash and cash equivalents
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 203,939	$ 168,520
Carrying Amount	$ 203,939	$ 168,520
Hierarchy Level	1	1
Debt Securities, Held-to-Maturity [Member]
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 173,661	$ 177,765
Carrying Amount	$ 198,387	$ 202,495
Hierarchy Level	2	2
Mortgage loans held for sale
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 10,442	$ 4,811
Carrying Amount	$ 10,442	$ 4,811
Hierarchy Level	2	2
Interest Receivable
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 17,178	$ 19,107
Carrying Amount	$ 17,178	$ 19,107
Hierarchy Level	3	3
Investment in FHLB stock and other assets
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 32,758	$ 30,814
Carrying Amount	$ 32,758	$ 30,814
Hierarchy Level	3	3