SECURITIES - Held-to-maturity Debt Securities with Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Less than 12 Months
Fair Value	$ 0	$ 0
Unrealized Loss	0	0
12 Months or More
Fair Value	352,138	360,570
Unrealized Loss	(29,568)	(28,398)
Fair Value	352,138	360,570
Unrealized Loss	(29,568)	(28,398)
Credit related impairment	0	0
U.S. Government sponsored entities
Less than 12 Months
Fair Value	0	0
Unrealized Loss	0	0
12 Months or More
Fair Value	278,651	283,907
Unrealized Loss	(19,373)	(19,038)
Fair Value	278,651	283,907
Unrealized Loss	(19,373)	(19,038)
Residential & multi-family mortgage
Less than 12 Months
Fair Value	0	0
Unrealized Loss	0	0
12 Months or More
Fair Value	73,487	76,663
Unrealized Loss	(10,195)	(9,360)
Fair Value	73,487	76,663
Unrealized Loss	$ (10,195)	$ (9,360)

Debt Securities, Held-to-maturity, Unrealized Loss Position Less Than 12 Months [Abstract]

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- Definition

Debt Securities, Held-to-maturity, Unrealized Loss Position More Than 12 Months [Abstract]

+ References

No definition available.

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- Definition

Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (aaa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

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-Topic 326
-SubTopic 20
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-Paragraph 13
-Subparagraph (a)
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-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for 12 months or longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-6

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

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-Topic 320
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-Name Accounting Standards Codification
-Section 50
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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

+ References

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-Topic 320
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-Section 50
-Paragraph 6
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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity), in continuous loss position for less than 12 months.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.

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