INVESTMENTS IN CONSUMER LOANS - Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Total Consumer Loan Companies equity	$ 4,102,112		$ 3,260,100
Others’ interests in equity of consolidated subsidiary	199,648		208,077
Noncontrolling interests in income (loss) of consolidated subsidiaries	15,780	$ 4,202
Consumer Loan Companies [Member]
Noncontrolling Interest [Line Items]
Total Consumer Loan Companies equity	75,153		$ 75,311
Net Consumer Loan Companies income (loss)	$ 21,420
Consumer Loan Companies [Member]
Noncontrolling Interest [Line Items]
Others’ ownership interest	46.50%		46.50%
Others’ interests in equity of consolidated subsidiary	$ 34,946		$ 35,020
Noncontrolling interests in income (loss) of consolidated subsidiaries	$ 9,960