FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Level 3 Assets and Liabilities) (Details) - Mortgage revenue bonds - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 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	(64)	(62)
Unrealized net gain (loss) included in other comprehensive income	2,876	(1,443)
Aggregate fair value / Balance at the end of the period	16,402	11,749
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	(58)	(56)
Unrealized net gain (loss) included in other comprehensive income	(55)	66
Aggregate fair value / Balance at the end of the period	6,323	6,594
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	(6)	(6)
Unrealized net gain (loss) included in other comprehensive income	(4)	33
Aggregate fair value / Balance at the end of the period	704	711
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	2,935	(1,542)
Aggregate fair value / Balance at the end of the period	$ 9,375	$ 4,444

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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