VARIABLE INTEREST ENTITIES BORROWINGS (Apidos CDO III) (Details) RSO (Apidos CDO III Senior Notes [Member], USD $)				12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		5 Months Ended
	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]	May 31, 2006 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]	Dec. 31, 2012 RSO [Member] Senior Notes Class D [Member]	May 31, 2006 RSO [Member] Senior Notes Class D [Member]	May 31, 2006 RCC Commercial [Member]
Debt Instrument [Line Items]
Closing transaction amount			$ 285,500,000
Face amount of debt issued			262,500,000		212,000,000		19,000,000		15,000,000		10,500,000		6,000,000
Payments by parent to acquire notes issued by VIE														23,000,000
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		3-month LIBOR
Basis spread on variable rate				0.26%		0.45%		0.75%		1.75%		4.25%
Weighted average interest rate on all notes issued to outside investors and net of repurchased notes (in hundredths)	0.80%	0.99%
Repayments of debt				$ 40,500,000