Condensed Consolidated Statement of Equity (Unaudited) (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]
Beginning Balance at Dec. 31, 2013	$ 1,044,373	$ 1	$ 672,165	$ 425,796	$ (53,589)
Beginning Balance, Shares at Dec. 31, 2013	91,254	91,254
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Sse	(2,792)
Shares issued in connection with share-based compensation (shares)		776
Shares issued in connection with share-based compensation (value)	2,730		2,730
Tax withholdings related to net share settlements of restricted stock units	(14,314)		(14,314)
Share-based compensation	8,031		8,031
Shares repurchased and retired (shares)		(216)
Shares repurchased and retired (value)	(6,850)		(6,850)
Purchase of subsidiary shares from noncontrolling interests	26
Other comprehensive income	12,989				12,989
Ending Balance at Mar. 31, 2014	$ 1,044,193	$ 1	$ 661,762	$ 423,030	$ (40,600)
Ending Balance, Shares at Mar. 31, 2014	91,814	91,814