VARIABLE INTEREST ENTITIES BORROWINGS (Apidos CDO I) (Details) RSO (Apidos CDO I Senior Notes [Member], USD $)				12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended				1 Months Ended
	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]	Aug. 31, 2005 RSO [Member]	Dec. 31, 2012 RSO [Member] Senior Notes Class A-1 [Member]	May 31, 2006 RSO [Member] Senior Notes Class A-1 [Member]	Dec. 31, 2012 RSO [Member] Senior Notes Class A-2 [Member]	May 31, 2006 RSO [Member] Senior Notes Class A-2 [Member]	Dec. 31, 2012 RSO [Member] Senior Notes Class B [Member]	May 31, 2006 RSO [Member] Senior Notes Class B [Member]	Dec. 31, 2012 RSO [Member] Senior Notes Class C [Member]	May 31, 2006 RSO [Member] Senior Notes Class C [Member]	May 31, 2006 RSO [Member] Senior Notes Class D [Member]	Aug. 31, 2005 RSO [Member] Senior Notes Class D [Member]	Aug. 31, 2005 RCC Commercial [Member]
Debt Instrument [Line Items]
Closing transaction amount			$ 350,000,000
Face amount of debt issued			321,500,000		259,500,000		15,000,000		20,500,000		13,000,000	8,000,000
Payments by parent to acquire notes issued by VIE														28,500,000
Percentage of senior notes acquired by the parent														100.00%
Description of variable rate basis				3-month LIBOR		3-month LIBOR		3-month LIBOR		3-month LIBOR
Basis spread on variable rate				0.26%		0.42%		0.75%		1.85%
Interest rate at period end (in hundredths)													9.251%
Weighted average interest rate on all notes issued to outside investors and net of repurchased notes (in hundredths)	1.07%	1.04%
Repayments of debt				116,300,000
Repurchase amount of debt								2,000,000
Weighted average price to par paid to repurchase debt								85.11%
Gain on repurchase of debt instrument								$ 298,000