INVESTMENTS IN CONSUMER LOANS - Carrying Value of Performing Loans (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Loans Receivable [Roll Forward]
Proceeds from repayments	$ (62,293)	$ (57,168)
Accretion of loan discount and premium amortization, net	80,990	$ 256,955
Consumer Portfolio Segment \| Performing Loans
Loans Receivable [Roll Forward]
Balance at December 31, 2019	827,545
Fair value adjustment due to fair value option	36,472
Additional fundings	17,684
Proceeds from repayments	(119,124)
Accretion of loan discount and premium amortization, net	13,108
Fair value adjustment, changes in instrument-specific credit risk	(4,565)
Fair value adjustment, other factors	(4,658)
Balance at March 31, 2020	$ 766,462

Financing Receivable, Additional Funding Receivable

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- Definition

Loans-Held-For Investment, Fair Value Adjustment, Changes In Instrument-Specific Credit Risk

+ References

No definition available.

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- Definition

Loans-Held-For Investment, Fair Value Adjustment, Other Factors

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Loans-Held-For Investment, Fair Value Adjustments Due To Fair Value Option

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- Definition

Loans Receivable [Roll Forward]

+ References

No definition available.

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- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

+ 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
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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- Definition

The cash inflow from repayments of the balance excluding interest (principal) on loans receivable and leases held for investment purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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