Condensed Consolidated Statement of Stockholders Equity (Unaudited) (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Deferred Compensation Expense
Balance at Dec. 31, 2010	$ 945,957	$ 259	$ 370,218	$ 536,468	$ 39,137	$ (7,228)	$ 7,103
Beginning Balance, Shares at Dec. 31, 2010						(256)
Net income (loss)	26,289			26,289
Issuance of common stock	5,031	2	5,029
Exercise of stock options	1,470	1	1,469
Deferred compensation plan	(727)		31			(1,757)	999
Deferred compensation plan, Shares						(39)
Unrealized gain on cash flow hedge	1,246				1,246
Translation adjustment	(5,465)				(5,465)
Balance at Sep. 30, 2011	$ 973,801	$ 262	$ 376,747	$ 562,757	$ 34,918	$ (8,985)	$ 8,102
Ending Balance, Shares at Sep. 30, 2011						(295)