LOAN PERFORMANCE - Troubled debt restructurings with payment defaults (Details)	12 Months Ended
Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) loan
Restructured loans
TDRs with payment defaults, Balance	$ 0
TDRs with payment defaults after restructuring
Restructured loans
TDRs with payment defaults, Number of Loans \| loan		12
TDRs with payment defaults, Balance		$ 17,717,000
Commercial and industrial \| TDRs with payment defaults after restructuring
Restructured loans
TDRs with payment defaults, Number of Loans \| loan		3
TDRs with payment defaults, Balance		$ 1,983,000
Commercial real estate \| TDRs with payment defaults after restructuring
Restructured loans
TDRs with payment defaults, Number of Loans \| loan		3
TDRs with payment defaults, Balance		$ 3,370,000
Construction and development \| TDRs with payment defaults after restructuring
Restructured loans
TDRs with payment defaults, Number of Loans \| loan		4
TDRs with payment defaults, Balance		$ 12,270,000
1-4 family residential \| TDRs with payment defaults after restructuring
Restructured loans
TDRs with payment defaults, Number of Loans \| loan		2
TDRs with payment defaults, Balance		$ 94,000

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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