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MORTGAGE LOAN RECEIVABLES - Schedule of Mortgage Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Jan. 31, 2023	Mar. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	$ 3,840,942	$ 3,938,615
Allowance for credit losses	(25,499)	(20,755)		$ (32,332)	$ (31,752)
Carrying Value	$ 3,795,773	$ 3,892,382	$ 51,500
Weighted average yield	9.14%	8.82%
Remaining Maturity	1 year 1 month 6 days	1 year 3 months 18 days
Principal balance of loans on non-accrual status	$ 53,624	$ 53,809
Deferred origination fees and other items	15,500	21,500
First mortgage loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	3,766,258	3,841,315
Carrying Value gross, consumer and commercial real estate	$ 3,750,799	$ 3,819,860
Weighted average yield	9.16%	8.83%
Remaining Maturity	1 year 1 month 6 days	1 year 3 months 18 days
Mezzanine loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	$ 43,334	$ 65,950
Carrying Value gross, consumer and commercial real estate	$ 43,276	$ 65,886
Weighted average yield	11.11%	10.62%
Remaining Maturity	1 year 6 months	1 year 7 months 6 days
Total mortgage loans receivable
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	$ 3,809,592	$ 3,907,265
Carrying Value gross, consumer and commercial real estate	$ 3,794,075	$ 3,885,746
Weighted average yield	9.18%	8.85%
Remaining Maturity	1 year 1 month 6 days	1 year 3 months 18 days
Total mortgage loan receivables held for investment, net, at amortized cost
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	$ 3,809,592	$ 3,907,265
Allowance for credit losses	(25,499)	(20,755)		$ (32,332)	$ (31,752)
Carrying Value	$ 3,768,576	3,864,991
Remaining Maturity	2 years 4 months 24 days
Mortgage loan receivables held for sale, First Mortgage Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Outstanding Face Amount	$ 31,350	31,350
Carrying Value	$ 27,197	$ 27,391
Weighted average yield	4.57%	4.57%
Remaining Maturity	8 years 10 months 24 days	9 years 2 months 12 days

X

- Definition

Amount of the contractual principal due as of the balance sheet date of the mortgage loan (face amount).

+ References

No definition available.

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- Definition

Represents the remaining maturity period of mortgage loans.

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- Definition

Mortgage Loans on Real Estate, Gross, Commercial and Consumer, Net

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- Definition

Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Paragraph Column B
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column B))
-URI https://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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- Definition

Amount of unamortized loan commitment, origination, and other costs (fees) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534

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- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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