INVESTMENTS IN CONSUMER LOANS - Schedule of Aggregate Unpaid Principal Balance and Aggregate Carrying Value (Details) - Parent - Consumer Portfolio Segment $ in Thousands	Jun. 30, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	$ 718,385
Fair Value	766,462
Fair Value Over (Under) Unpaid Principal Balance	48,077
Under 90 Days
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	704,708
Fair Value	752,053
Fair Value Over (Under) Unpaid Principal Balance	47,345
90 to 119
Schedule of Equity Method Investments [Line Items]
Unpaid Principal Balance	13,677
Fair Value	14,409
Fair Value Over (Under) Unpaid Principal Balance	$ 732