FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Level 3 Assets and Liabilities) (Details) - Mortgage revenue bonds - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	$ 13,590	$ 13,254
Principal payments received	(181)	(189)
Unrealized net gain (loss) included in other comprehensive income	(1,151)	4,104
Aggregate fair value / Balance at the end of the period	12,258	17,169
States and political subdivisions
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	6,436	6,584
Principal payments received	(163)	(172)
Unrealized net gain (loss) included in other comprehensive income	65	(49)
Aggregate fair value / Balance at the end of the period	6,338	6,363
Residential - Non-government agencies
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	714	684
Principal payments received	(18)	(17)
Unrealized net gain (loss) included in other comprehensive income	22	4
Aggregate fair value / Balance at the end of the period	718	671
Interest rate swap agreements
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	6,440	5,986
Principal payments received	0	0
Unrealized net gain (loss) included in other comprehensive income	(1,238)	4,149
Aggregate fair value / Balance at the end of the period	$ 5,202	$ 10,135

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

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- Definition

Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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