FAIR VALUE OF FINANCIAL INSTRUMENTS, Quantitative Information about Level 3 Inputs (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Impaired loans measurement [Abstract]
Impaired financing receivable, with related allowance, recorded investment	$ 1,730		$ 1,993
Impaired financing receivable, related allowance	66		10
Impaired financing receivable, increase in provision expense	56	$ 90	10
Financing receivable, charge-offs	0		0
Commercial and Industrial [Member]
Impaired loans measurement [Abstract]
Impaired financing receivable, with related allowance, recorded investment	1,730		1,993
Impaired financing receivable, related allowance	66		10
Significant Unobservable Inputs (Level 3) [Member] \| Commercial and Industrial [Member] \| Nonrecurring [Member]
Significant Unobservable Inputs Related to Assets and Liabilities Measured at Fair Value [Abstract]
Impaired loans, fair value	$ 1,664		$ 1,983
Significant Unobservable Inputs (Level 3) [Member] \| Commercial and Industrial [Member] \| Adjustment to Comparable [Member] \| Sales Approach [Member] \| Nonrecurring [Member] \| Minimum [Member]
Significant Unobservable Inputs Related to Assets and Liabilities Measured at Fair Value [Abstract]
Impaired loans, measurement inputs	0		0
Significant Unobservable Inputs (Level 3) [Member] \| Commercial and Industrial [Member] \| Adjustment to Comparable [Member] \| Sales Approach [Member] \| Nonrecurring [Member] \| Maximum [Member]
Significant Unobservable Inputs Related to Assets and Liabilities Measured at Fair Value [Abstract]
Impaired loans, measurement inputs	0.25		0.25
Significant Unobservable Inputs (Level 3) [Member] \| Commercial and Industrial [Member] \| Adjustment to Comparable [Member] \| Sales Approach [Member] \| Nonrecurring [Member] \| Weighted Average [Member]
Significant Unobservable Inputs Related to Assets and Liabilities Measured at Fair Value [Abstract]
Impaired loans, measurement inputs	0.170		0.184

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The fair value disclosure of impaired loans.

+ References

No definition available.

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Value of input used to measure impaired loans.

+ References

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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Amount of increase (decrease) in allowance for credit loss on financing receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
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-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524

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