SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Investments in Loans and Securities (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) securitization	Dec. 31, 2021 USD ($) securitization	Dec. 31, 2020 securitization
Accounting Policies [Abstract]
Number of securitization transactions \| securitization	30	30	30
Schedule of Held-to-Maturity Securities [Line Items]
Investments in loans and securities	$ 463,976	$ 282,724
Other loans and receivables
Schedule of Held-to-Maturity Securities [Line Items]
Investments in loans and securities	$ 13,766	$ 12,657

Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563

Reference 3: 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant