CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Earnings	Treasury Stock	Noncontrolling Interests in Subsidiaries
Beginning Balance at Dec. 31, 2009	$ 1,417,169	$ 15,562	$ 916,423	$ 7,443	$ 443,646	$ (68)	$ 34,163
Beginning Balance (in shares) at Dec. 31, 2009		155,615,000				679,000
Stock-based compensation expense	9,421		9,421
Dividends declared	(232,671)				(232,671)
Unvested restricted shares forfeited			9			(9)
Unvested restricted shares forfeited (in shares)						88,000
Exercise of options to purchase common stock (in shares)		95,000
Exercise of options to purchase common stock	704	10	694
Shares issued in non-vested stock award (in shares)		786,000
Shares issued in non-vested stock award		78	(78)
Acquisition of noncontrolling interests in subsidiaries	(2,000)		(1,284)				(716)
Distributions to partners of noncontrolling interests in subsidiaries	(5,673)						(5,673)
Comprehensive income, net of income taxes:
Net income	22,541				18,556		3,985
Foreign currency translation	(9,705)			(9,864)			159
Pension and other postretirement plan unrecognized net loss, net of income tax benefit of $131 in 2011, $58 in 2010	(147)			(147)
Net unrealized gain on securities, net of income tax expense of $240 in 2011, $31 in 2010	78			78
Total comprehensive (loss) income	12,767			(9,933)	18,556		4,144
Ending Balance at Jun. 30, 2010	1,199,717	15,650	925,185	(2,490)	229,531	(77)	31,918
Ending Balance (in shares) at Jun. 30, 2010		156,496,000				767,000
Beginning Balance at Dec. 31, 2010	1,160,459	15,685	893,373	5,233	214,091	(696)	32,773
Beginning Balance (in shares) at Dec. 31, 2010		156,847,000				6,956,000
Stock-based compensation expense	8,987		8,987
Deferred tax adjustment on stock-based compensation	(1,464)		(1,464)
Dividends declared	(21,835)				(21,835)
Common stock repurchased	(124,364)		(43,114)		(80,505)	(745)
Common stock repurchased (in shares)	7,400,000					7,449,000
Repurchase of equity related to Debenture tender offer	(71)		(71)
Unvested restricted shares forfeited			2			(2)
Unvested restricted shares forfeited (in shares)						25,000
Exercise of options to purchase common stock (in shares)		68,000
Exercise of options to purchase common stock	403	7	396
Shares issued in non-vested stock award (in shares)		743,000
Shares issued in non-vested stock award		74	(74)
Dividends for vested stock awards			821		(821)
Shares repurchased for tax withholdings for vested stock awards	(3,648)		(1,237)		(2,389)	(22)
Shares repurchased for tax withholdings for vested stock awards (in shares)	216,605					217,000
Elimination due to sale of controlling interests in subsidiaries	(18,274)						(18,274)
Distributions to partners of noncontrolling interests in subsidiaries	(3,068)						(3,068)
Comprehensive income, net of income taxes:
Net income	155,068				151,633		3,435
Foreign currency translation	8,207			8,332			(125)
Pension and other postretirement plan unrecognized net loss, net of income tax benefit of $131 in 2011, $58 in 2010	(200)			(200)
Net unrealized loss on derivatives, net of income tax benefit of $146	(223)			(223)
Net unrealized gain on securities, net of income tax expense of $240 in 2011, $31 in 2010	365			365
Total comprehensive (loss) income	163,217			8,274	151,633		3,310
Ending Balance at Jun. 30, 2011	$ 1,160,342	$ 15,766	$ 857,619	$ 13,507	$ 260,174	$ (1,465)	$ 14,741
Ending Balance (in shares) at Jun. 30, 2011		157,658,000				14,647,000