VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Estimated Maturities of Available-For-Sale Securities) (Details) RSO - RSO [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value
Less than one year	$ 125,357	$ 78,095
Greater than one year and less than five years	82,189	115,302
Greater than five years and less than ten years	13,643	20,177
Greater than ten years	13,411	62,146
Total	234,600	275,720
Amortized Cost
Less than one year	124,387	79,649
Greater than one year and less than five years	77,757	100,909
Greater than five years and less than ten years	11,779	17,516
Greater than ten years	13,060	58,441
Total	$ 226,983	$ 256,515
Weighted Average Coupon
Less than one year	8.18%	4.13%
Greater than one year and less than five years	6.66%	4.64%
Greater than five years	10.19%	16.45%
Weighted average coupon rate, greater than ten years	9.02%	7.86%
Total	7.81%	6.08%