FAIR VALUE MEASUREMENTS - Fair Value Level 3 on recurring basis (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Interest rate lock commitments with customers
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 250	$ 1,985	$ 757	$ 4,024
Purchases and Issuances	22	7,169	2,117	14,860
Sales and Settlements	(88)	(7,048)	(2,690)	(16,778)
Ending Balance	184	2,106	184	2,106
Net change in fair value for gains/(losses) relating to items held at end of period included in income	(66)	121	(573)	(1,918)
Individual forward sale commitments with investors
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	885	506	808	(67)
Purchases and Issuances	2,931	(1,200)	5,073	(546)
Sales and Settlements	(3,298)	141	(5,363)	60
Ending Balance	518	(553)	518	(553)
Net change in fair value for gains/(losses) relating to items held at end of period included in income	(367)	(1,059)	(290)	(486)
Securities available-for-sale.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,121	1,129	1,138	1,111
Purchases and Issuances	27		13	12
Sales and Settlements	(3)	(12)	(6)	(6)
Ending Balance	1,145	1,117	1,145	1,117
Net change in fair value for gains/(losses) relating to items held at end of period included in other comprehensive	$ 24	$ (9)	$ 7	$ 12

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 income from asset measured at fair value on recurring basis using unobservable input (level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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- Definition

Amount of purchases 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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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

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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.

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