RESIDENTIAL MORTGAGE LOANS - Narrative (Details) - Residential Mortgage Loans	6 Months Ended
Jun. 30, 2022 USD ($) trust	Jun. 30, 2021 USD ($) security
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of trusts called	5	42
Loans Sold
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	$ 0	$ 3,300,000
Gain on securitization accounted for as sales	$ 8,300,000	$ 19,400,000

Mortgage Loans On Real Estate, Number Of Trusts Called

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+ References

No definition available.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(b))
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599

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