FAIR VALUE - Rollforward of changes in fair value of loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Mortgage loans held for sale
Guarantee asset
Balance at beginning of period	$ 9,873	$ 33,663	$ 8,839	$ 30,620
Loans transferred from held for investment	97,117	279,412	151,189	470,494
Fair value changes	59	(1,086)	128	(419)
Sales	(87,303)	(285,777)	(140,403)	(474,443)
Settlements	0	(10)	(7)	(50)
Balance at end of period	19,746	26,202	19,746	26,202
Loans held for sale
Guarantee asset
Balance at beginning of period	0	0	1,965	0
Loans transferred from held for investment	0	0	39,221	0
Fair value changes	0	0	(20)	0
Sales	0	0	(40,761)	0
Settlements	0	0	(405)	0
Balance at end of period	0	0	0	0
Loan Held for Investment
Guarantee asset
Balance at beginning of period	20,807	6,380	23,321	0
Fair value changes	(507)	328	(657)	328
Settlements	(2,160)	(3,100)	(5,294)	(3,100)
Loans acquired	0	17,869	1,162	24,249
Net charge-offs	(617)	0	(1,009)	0
Balance at end of period	$ 17,523	$ 21,477	$ 17,523	$ 21,477

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Write-Off

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

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- Definition

Amount of issuances 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

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

+ Details

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- Definition

Amount of sale 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

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.

+ 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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