INVESTMENTS IN CONSUMER LOANS - Consumer Loans Receivable Past Due (Details) - Performing Loans - Consumer Portfolio Segment	Sep. 30, 2019
Financing Receivable, Past Due [Line Items]
Percent past due	100.00%
Current
Financing Receivable, Past Due [Line Items]
Percent past due	95.50%
30-59
Financing Receivable, Past Due [Line Items]
Percent past due	1.70%
60-89
Financing Receivable, Past Due [Line Items]
Percent past due	1.00%
90-119
Financing Receivable, Past Due [Line Items]
Percent past due	0.70%
120 or greater
Financing Receivable, Past Due [Line Items]
Percent past due	1.10%