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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Loans - (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) loan borrower	Mar. 31, 2021 borrower	Dec. 31, 2021 USD ($) loan
Schedule of Available-for-sale Securities [Line Items]
Number of TDRs accounts	1		1
Amount of recorded investment in new troubled debt restructurings, totaled | $	$ 36		$ 36
Number of borrowers | borrower	5	8
Consumer and Indirect
Schedule of Available-for-sale Securities [Line Items]
Number of loans | loan	1
Consumer and Indirect | Consumer Loans
Schedule of Available-for-sale Securities [Line Items]
Number of loans | loan	1
Number of borrowers | borrower	1

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Represents number of borrowers consumer and indirect loans.

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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