VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Estimated Maturities of Available-For-Sale Securities) (Details) RSO - RSO [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value
Less than one year	$ 108,353	$ 78,095
Greater than one year and less than five years	95,677	115,302
Greater than five years and less than ten years	17,522	20,177
Greater than ten years	31,876	62,146
Total	253,428	275,720
Amortized Cost
Less than one year	107,588	79,649
Greater than one year and less than five years	88,814	100,909
Greater than five years and less than ten years	16,245	17,516
Greater than ten years	28,632	58,441
Total	$ 241,279	$ 256,515
Weighted Average Coupon
Less than one year	6.72%	4.13%
Greater than one year and less than five years	6.94%	4.64%
Greater than five years	13.43%	16.45%
Weighted average coupon rate, greater than ten years	9.05%	7.86%
Total	7.56%	6.08%