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LOANS - Corporate Debt Held for Investment (Details) - Corporate Loans - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Beginning balance |  | $ 2,239,930 | $ 2,152,213
Originations & advances | $ 1,572,718 | 1,061,644 |
Sales and transfers | (1,205,965) | (353,090) |
Principal payments | (661,941) | (576,759) |
Amortization & accretion of (premium) discounts | 12,617 | 12,206 |
Loan restructuring |  | (16,732) |
Allowance for loan losses |  |  |
Beginning allowance | (39,552) | (7,363) |
Current period (allowance) reversal | 11,632 | (14,429) |
Write offs |  | 11,893 |
Ending allowance | (27,920) | (39,552) |
Net carrying value | 1,968,991 | 2,239,930 |
Cumulative effect of change in accounting principle for credit losses |  |  |
Allowance for loan losses |  |  |
Beginning allowance |  | (29,653) |
First lien loans |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Beginning balance |  | 1,489,125 | 1,403,503
Originations & advances | 1,506,705 | 834,211 |
Sales and transfers | (1,122,275) | (273,887) |
Principal payments | (492,884) | (444,759) |
Amortization & accretion of (premium) discounts | 9,120 | 8,374 |
Loan restructuring |  | (19,550) |
Allowance for loan losses |  |  |
Beginning allowance | (18,767) | (7,363) |
Current period (allowance) reversal | 1,426 | (12,510) |
Write offs |  | 11,893 |
Ending allowance | (17,341) | (18,767) |
Net carrying value | 1,391,217 | 1,489,125 |
First lien loans | Cumulative effect of change in accounting principle for credit losses |  |  |
Allowance for loan losses |  |  |
Beginning allowance |  | (10,787) |
Second Lien |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Beginning balance |  | 750,805 | $ 748,710
Originations & advances | 66,013 | 227,433 |
Sales and transfers | (83,690) | (79,203) |
Principal payments | (169,057) | (132,000) |
Amortization & accretion of (premium) discounts | 3,497 | 3,832 |
Loan restructuring |  | 2,818 |
Allowance for loan losses |  |  |
Beginning allowance | (20,785) | 0 |
Current period (allowance) reversal | 10,206 | (1,919) |
Write offs |  | 0 |
Ending allowance | (10,579) | (20,785) |
Net carrying value | $ 577,774 | 750,805 |
Second Lien | Cumulative effect of change in accounting principle for credit losses |  |  |
Allowance for loan losses |  |  |
Beginning allowance |  | $ (18,866) |

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- Definition SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Excluding Loan Loss Allowance + References No definition available. + Details
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- Definition Amount of decrease in 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, from collection of principal. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Footnote 6 -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(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
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- Definition The net increase(decrease) in interest income during the period representing the allocation of deferred loan origination fees less deferred loan origination costs using the effective interest method over the term of the debt arrangement to which they pertain taking into account the effect of prepayments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124402152&loc=d3e8622-111531 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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