CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income	$ 12,767	$ 11,609
Other comprehensive income (loss):
Subtotal - other comprehensive income	5,175	10,647
Comprehensive income	17,942	22,256
Comprehensive income attributable to noncontrolling interests	(17,574)	(24,553)
Comprehensive income attributable to common shareholders	368	(2,297)
Consolidated Entity Excluding RSO [Member]
Other comprehensive income (loss):
Unrealized losses on investment securities available-for-sale	(351)	(109)
Reclassification adjustments for losses realized, net of tax of $83 and $28	131	46
Other comprehensive income (loss), available-for-sale securities adjustment, net of tax	(220)	(63)
Minimum pension liability- reclassification adjustments for losses realized, net of tax of $9 and $36	87	47
Unrealized gains on hedging contracts	5	101
Subtotal - other comprehensive income	(128)	85
VIE - RSO [Member]
Other comprehensive income (loss):
Unrealized losses on investment securities available-for-sale	4,541	10,587
Unrealized gains on hedging contracts	1,334	(93)
Reclassification adjustments for losses included in net income	55	12
Reclassification adjustments associated with unrealized (gains) losses from interest rate hedges included in net income	(627)	56
Subtotal - other comprehensive income	$ 5,303	$ 10,562