RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET INCOME - Summary of Amounts Reclassified out of Accumulated Other Comprehensive Income into Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on settlement of investments, net	$ 16,409	$ (938)	$ 441	$ (57,834)
Other-than-temporary impairment (“OTTI”) on securities	1,574	0	3,294	943
Total reclassifications	(61,755)	(152,098)	(182,830)	(391,171)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on settlement of investments, net	(24,454)	(3,668)	(31,230)	(65,444)
Other-than-temporary impairment (“OTTI”) on securities	1,574	0	3,294	943
Total reclassifications	$ (22,880)	$ (3,668)	$ (27,936)	$ (64,501)