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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of financial instruments fair value (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 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	$ 74,356	$ 74,281
Hierarchy Level	2	2
Deposits
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 4,784,469	$ 4,672,913
Carrying Amount	$ 4,799,107	$ 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	$ 226,364	$ 266,426
Carrying Amount	$ 226,364	$ 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	$ 67	$ 73
Carrying Amount	$ 67	$ 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	$ 4,671	$ 3,010
Carrying Amount	$ 4,671	$ 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	$ 4,440,904	$ 4,391,084
Carrying Amount	$ 4,569,328	$ 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	$ 184,676	$ 168,520
Carrying Amount	$ 184,676	$ 168,520
Hierarchy Level	1	1
Held-to-maturity securities
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 179,853	$ 177,765
Carrying Amount	$ 200,427	$ 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	$ 6,099	$ 4,811
Carrying Amount	$ 6,099	$ 4,811
Hierarchy Level	2	2
Interest Receivable
Fair value of respective financial instruments could be sold individually or in the aggregate
Fair Value	$ 17,484	$ 19,107
Carrying Amount	$ 17,484	$ 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	$ 27,658	$ 30,814
Carrying Amount	$ 27,658	$ 30,814
Hierarchy Level	3	3

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969

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