Consolidated Statements of Changes in Equity (USD $) In Thousands		Total	Common Stock [Member]	Additional Paid-in Capital from Treasury Stock Transactions [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss, Net of Tax [Member]	Total Shareholders' Equity [Member]	Nonredeemable Noncontrolling Interest in Subsidiary [Member]	Redeemable Noncontrolling Interests in Subsidiaries Temporary Equity [Member]
Balance at Dec. 31, 2009		$ 528,815	$ 217,009	$ 0	$ 1,105,073	$ (795,389)	$ 1,514	$ 528,207	$ 608	$ 13,913
Net Income		140,133	0	0	132,713	0	0	132,713	7,420	400
Other comprehensive income loss, net of tax:
Unrealized gain on securities available for sale, net of reclassification adjustment	[1]	906	0	0	16	0	890	906	0	0
Unrealized loss on interest rate swap, net of reclassification adjustment	[2]	(11,947)	0	0	0	0	(11,947)	(11,947)	0	0
Foreign currency translation loss	[3]	(303)	0	0	0	0	(303)	(303)	0	(35)
Comprehensive Income	[4]	128,789						121,369	7,420
Subscriptions - redeemable noncontrolling interest holders		0	0	0	0	0	0	0	0	7,467
Stock award activity		15,472	15,472	0	(8,283)	8,283	0	15,472	0	0
Dividends declared/Distributions to noncontrolling interest in subsidiaries		(210,959)	0	0	(203,423)	0	0	(203,423)	(7,536)	(2,134)
Stock option activity		924	240	153	(129)	660	0	924	0	0
Purchase of treasury stock		(9,289)	0	0	0	(9,289)	0	(9,289)	0	0
Balance at Sep. 30, 2010		453,752	232,721	153	1,025,967	(795,735)	(9,846)	453,260	492	19,611
Balance at Dec. 31, 2010		492,172	237,397	135	1,036,571	(778,609)	(3,695)	491,799	373	1,543
Net Income		116,348	0	0	113,964	0	0	113,964	2,384	111
Other comprehensive income loss, net of tax:
Unrealized loss on interest rate swap, net of reclassification adjustment	[2]	(2,934)	0	0	0	0	(2,934)	(2,934)	0	0
Unrealized loss on securities available for sale, net of reclassification adjustment	[1]	(5,813)	0	0	(3)	0	(5,810)	(5,813)	0	0
Foreign currency translation loss	[3]	(21)	0	0	0	0	(21)	(21)	0	(3)
Comprehensive Income	[4]	107,580						105,196	2,384
Subscriptions - redeemable noncontrolling interest holders		0	0	0	0	0	0	0	0	6,511
Deconsolidation		0	0	0	0	0	0	0	0	(7,626)
Stock award activity		14,835	14,812	(457)	(10,948)	11,428	0	14,835	0	0
Dividends declared/Distributions to noncontrolling interest in subsidiaries		(76,536)	0	0	(75,032)	0	0	(75,032)	(1,504)	(17)
Stock option activity		11,157	(3,973)	662	0	14,468	0	11,157	0	0
Purchase of treasury stock		(19,104)	0	0	0	(19,104)	0	(19,104)	0	0
Balance at Sep. 30, 2011		$ 530,104	$ 248,236	$ 340	$ 1,064,552	$ (771,817)	$ (12,460)	$ 528,851	$ 1,253	$ 519

[1] The tax related to this line item was $4,247 and $(662) for the nine months ended September 30, 2011 and 2010, respectively.

[2] The tax related to this line item was $2,107 and $6,433 for the nine months ended September 30, 2011 and 2010, respectively.

[3] The tax related to this line item was $11 and $163 for the nine months ended September 30, 2011 and 2010, respectively.

[4] Comprehensive income for Total Shareholders’ Equity, Nonredeemable Noncontrolling Interest in Subsidiary and Total Permanent Equity was $29,726, $165 and $29,891, respectively, for the three months ended September 30, 2011. Comprehensive income for Total Shareholders’ Equity, Nonredeemable Noncontrolling Interest in Subsidiary and Total Permanent Equity was $42,879, $2,446 and $45,325, respectively, for the three months ended September 30, 2010.