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SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Debt Securities, Held to Maturity, Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 94	$ 130	$ 105	$ 104
Provision/(benefit) for credit losses	1	(5)	(10)	21
Ending balance	95	125	95	125
Municipal bonds and obligations
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	66	90	70	64
Provision/(benefit) for credit losses	1	(3)	(3)	23
Ending balance	67	87	67	87
Tax advantaged economic development bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	28	40	35	40
Provision/(benefit) for credit losses	0	(2)	(7)	(2)
Ending balance	$ 28	$ 38	$ 28	$ 38

X

- Definition

Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

+ Details

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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