CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Stockholders' Equity [Member]	Consolidated Entity Excluding RSO [Member]	Consolidated Entity Excluding RSO [Member] Noncontrolling Interests [Member]	VIE - RSO [Member]	VIE - RSO [Member] Noncontrolling Interests [Member]
Balance, beginning of period at Dec. 31, 2012	$ 733,790	$ 295	$ 286,048	$ (29,486)	$ (103,472)	$ (2,197)	$ 151,188		$ 279		$ 582,323
Balance, beginning of period (in shares) at Dec. 31, 2012		20,155,732
Increase (Decrease) Equity [Roll Forward]
Net income	49,468			5,051			5,051	49,468	23		44,394
Treasury shares issued (in shares)		26,235
Treasury shares issued	224		(49)		273		224
Stock-based compensation (in shares)		26,300
Stock-based compensation	991	2	989				991
Repurchases of common stock (in shares)		(221,580)
Repurchases of common stock	(1,670)				(1,670)		(1,670)
Exercise of warrants (in shares)		245,588
Exercise of warrants	1,252	2	1,250				1,252
Cash dividends	(1,985)			(1,985)			(1,985)
Distributions	(84)								(84)
Activity of consolidated VIE	115,528										115,528
Subtotal - other comprehensive income	9,582					(113)	(113)	(113)		9,695	9,695
Balance, end of period at Sep. 30, 2013	$ 907,096	$ 299	$ 288,238	$ (26,420)	$ (104,869)	$ (2,310)	$ 154,938		$ 218		$ 751,940
Balance, end of period (in shares) at Sep. 30, 2013		20,232,275