Consolidated Statements of Stockholders Equity Statement - USD ($) shares in Thousands, $ in Thousands		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Noncontrolling Interest [Member]	Retained Earnings [Member]	Treasury Stock, Common	AOCI Attributable to Parent
Shares, Outstanding			50,500
Total stockholders' equity		$ 1,049,987	$ 1,033	$ 421,609	$ 14,827	$ 2,643,629	$ (1,895,143)	$ (135,968)
Treasury Stock, at Average Cost (in shares)							52,800
Income (Loss) Attributable to Noncontrolling Interest, before Tax					1,228
Net Income (Loss) Attributable to Parent		113,850				113,850
Net income		115,078
Treasury Stock, Shares, Acquired			119				119
Treasury Stock, Value, Acquired, Cost Method		(15,000)					$ (15,000)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			(721)				(721)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture		(65,173)		(32,165)		(12,097)	$ (20,911)
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition				11,363
Share-based compensation expense		(11,363)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		523
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(1,837)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders		(3,771)			(3,771)
Shares, Outstanding			51,102
Total stockholders' equity		1,091,170	$ 1,033	400,807	12,284	2,745,382	$ (1,931,054)	(137,282)
Treasury Stock, at Average Cost (in shares)							52,198
Shares, Outstanding			49,735
Total stockholders' equity		1,351,323	$ 1,033	422,912	15,695	3,196,724	$ (2,145,890)	(139,151)
Treasury Stock, at Average Cost (in shares)							53,565
Income (Loss) Attributable to Noncontrolling Interest, before Tax					1,326
Net Income (Loss) Attributable to Parent		80,413				80,413
Net income		81,739
Treasury Stock, Shares, Acquired	[1]		2,649				2,649
Treasury Stock, Value, Acquired, Cost Method	[1]	(201,566)					$ (201,566)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			(557)				(557)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture		(34,062)		(36,753)		(4,480)	$ (7,171)
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition				10,591
Share-based compensation expense		(10,591)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax		(12,540)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		10,662
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders		(3,553)			(3,553)
Shares, Outstanding			47,643
Total stockholders' equity		$ 1,202,594	$ 1,033	$ 396,750	$ 13,468	$ 3,272,657	$ (2,340,285)	$ (141,029)
Treasury Stock, at Average Cost (in shares)							55,657

[1] (1)Includes commissions and excise tax on share repurchases