CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Items, Net	Noncontrolling Interests
Balance at Dec. 31, 2012	$ 1,157,148	$ 1,900	$ 942,199	$ 180,258	$ 20,314	$ 12,477
Balance (in shares) at Dec. 31, 2012		190,005,788
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $2,394 and $66 for the six months ended June 30, 2013 and 2014 respectively	30,907	11	30,896
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		1,103,917
Parent cash dividends declared	(104,544)			(104,544)
Currency translation adjustment	(42,834)				(42,011)	(823)
Net income (loss)	47,578			45,554		2,024
Noncontrolling interests equity contributions	743					743
Noncontrolling interests dividends	(1,155)					(1,155)
Balance at Jun. 30, 2013	1,087,843	1,911	973,095	121,268	(21,697)	13,266
Balance (in shares) at Jun. 30, 2013		191,109,705
Balance at Dec. 31, 2013	1,051,734	1,914	980,164	67,820	(8,660)	10,496
Balance (in shares) at Dec. 31, 2013	191,426,920	191,426,920
Increase (Decrease) in Stockholders' Equity
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation, including tax benefit of $2,394 and $66 for the six months ended June 30, 2013 and 2014 respectively	32,849	16	32,833
Issuance of shares under employee stock purchase plan and option plans and stock-based compensation (in shares)		1,565,924
Parent cash dividends declared	(104,776)			(104,776)
Currency translation adjustment	6,314				5,777	537
Market Value Adjustments for Securities, Net of Tax	548				548
Net income (loss)	314,485			313,304		1,181
Noncontrolling interests dividends	(699)					(699)
Purchase of noncontrolling interests	(3,305)		(805)			(2,500)
Balance at Jun. 30, 2014	$ 1,297,150	$ 1,930	$ 1,012,192	$ 276,348	$ (2,335)	$ 9,015
Balance (in shares) at Jun. 30, 2014	192,992,844	192,992,844