Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN CONSUMER LOANS - Changes in Consumer Loan Equity Method Investments (Details)

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INVESTMENTS IN CONSUMER LOANS - Changes in Consumer Loan Equity Method Investments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
May 31, 2018
Jun. 30, 2017
May 31, 2017
Jun. 30, 2018
May 31, 2018
Jun. 30, 2017
May 31, 2017
Increase (Decrease) in Equity Method Investments [Roll Forward]                
Distributions of earnings from equity method investees         $ (6,530)   $ (7,433)  
Earnings from investments in consumer loans, equity method investees $ 2,982   $ 5,880   7,788   $ 5,880  
Consumer Portfolio Segment | LoanCo and WarrantCo                
Increase (Decrease) in Equity Method Investments [Roll Forward]                
Beginning balance         51,412 $ 42,473    
Contributions to equity method investees         205,641      
Distributions of earnings from equity method investees         (3,263)      
Distributions of capital from equity method investees         (203,758)      
Earnings from investments in consumer loans, equity method investees   $ 2,982   $ 5,880 7,788 7,788   $ 5,880
Ending balance $ 57,820 $ 50,241     $ 57,820 $ 50,241