Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND BASIS OF PRESENTATION - Summary of Unaudited Pro Forma Combined Interest Income and Income (Loss) Before Income Taxes (Details)

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ORGANIZATION AND BASIS OF PRESENTATION - Summary of Unaudited Pro Forma Combined Interest Income and Income (Loss) Before Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Mar. 30, 2016
Pro Forma          
Interest income $ 282,388 $ 182,341 $ 749,901 $ 444,891  
Income (Loss) Before Income Taxes 151,986 55,823 358,846 187,777  
Consumer Loan Companies [Member]          
Pro Forma          
Interest Income 282,388 276,720 836,814 739,490  
Income Before Income Taxes 151,986 85,158 319,144 388,041  
Noncontrolling Interests in Income of Consolidated Subsidiaries 32,178 27,523 79,944 77,870  
Acquisition related costs     1,500    
Consumer Loans [Member]          
Pro Forma          
Interest income 77,231 0 155,541 1  
Income (Loss) Before Income Taxes 28,166 $ 13,790 $ 138,264 $ 32,112  
Consumer Loans [Member] | Operating Segments [Member]          
Pro Forma          
Interest income 154,300        
Income (Loss) Before Income Taxes $ 60,100        
Consumer Loan Companies [Member] | SpringCastle [Member]          
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Equity method investments, fair value         $ 71,300