VARIABLE INTEREST ENTITIES RSO Income Statement Detail (Details) (USD $)	1 Months Ended	3 Months Ended										6 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Mar. 31, 2011	Mar. 31, 2010	Jun. 30, 2011	Jun. 30, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]
Interest income:
Loans																			$ 109,030,000	$ 86,739,000
Securities																			14,296,000	12,424,000
Interest income − other																			10,004,000	10,711,000
Total interest income																			133,330,000	109,874,000
Interest expense																4,741,000	15,343,000		42,792,000	32,186,000
Net interest income																			90,538,000	77,688,000
Rental income																			11,463,000	3,656,000
Dividend income																			69,000	3,045,000
Equity in earnings (losses) of unconsolidated entities																3,439,000	10,377,000		(2,709,000)	112,000
Fee income																			7,068,000	7,789,000
Net realized gain on sales of investment securities available-for-sale and loans																			4,106,000	2,643,000
Net realized and unrealized gain on investment securities, trading																			12,435,000	837,000
Unrealized gain and net interest income on linked transactions, net																			728,000	216,000
Total revenues	39,374,000	47,889,000	35,811,000	39,996,000	42,430,000	45,944,000	43,276,000	35,282,000	25,238,000	19,400,000	25,422,000	78,558,000	44,822,000	124,502,000	70,060,000	170,900,000	166,932,000	88,728,000	123,698,000	95,986,000
OPERATING EXPENSES
Management fees − related party																			18,512,000	11,022,000
Equity compensation − related party																			4,636,000	2,526,000
Professional services																			4,700,000	3,791,000
Insurance																			639,000	658,000
Rental operating expense																			8,046,000	2,743,000
General and administrative																10,460,000	11,522,000		4,434,000	3,950,000
Depreciation and amortization																3,653,000	10,739,000		5,885,000	4,619,000
Income tax expense						1,440,000	(119,000)	1,167,000				1,048,000		2,488,000		28,114,000	7,429,000		14,602,000	12,036,000
Net impairment losses recognized in earnings																			180,000	6,898,000
Provision for loan losses																			16,818,000	13,896,000
Total operating expenses																			78,452,000	62,139,000
Costs and Expenses						30,874,000	37,380,000	26,878,000	30,372,000	21,276,000	21,002,000	64,258,000	42,278,000	95,132,000	72,650,000	130,626,000	131,539,000	96,920,000	63,850,000	50,103,000
Adjusted operating income																			59,848,000	45,883,000
OTHER REVENUE (EXPENSE)
Gain on consolidation																			2,498,000	0
Gain on the extinguishment of debt																(2,190,000)			16,699,000	3,875,000
Other income (expense), net						(201,000)	(4,460,000)	3,215,000	(2,859,000)	(3,955,000)	(3,247,000)	(1,245,000)	(7,202,000)	(1,446,000)	(10,061,000)	75,702,000	(6,153,000)	(11,755,000)	0	(6,000)
Total other revenue (expense)																			19,197,000	3,869,000
Income (loss) from continuing operations before taxes						14,869,000	1,436,000	11,619,000	(7,993,000)	(5,831,000)	1,173,000	13,055,000	(4,658,000)	27,924,000	(12,651,000)	115,976,000	29,240,000	(19,947,000)	79,045,000	49,752,000
Income tax expense						1,440,000	(119,000)	1,167,000				1,048,000		2,488,000		28,114,000	7,429,000		14,602,000	12,036,000
Net income (loss)	(433,000)	(2,267,000)	30,211,000	(2,382,000)	(3,591,000)	(517,000)	(8,953,000)	(1,502,000)	(5,315,000)	(1,232,000)	971,000	(10,455,000)	(261,000)	(10,972,000)	(5,576,000)	25,507,000	(14,563,000)	(13,451,000)	64,443,000	37,716,000
Net income allocated to preferred shares																			(1,244,000)	0
NET INCOME ALLOCABLE TO COMMON SHARES																			$ 63,199,000	$ 37,716,000