Condensed Consolidated Statement of Stockholders Equity (Unaudited) (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	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)	12,124			12,124
Issuance of common stock	3,239	1	3,238
Exercise of stock options	1,470	1	1,469
Deferred compensation plan	(986)		53			(1,778)	739
Deferred compensation plan, Shares						(39)
Unrealized gain on cash flow hedge	668				668
Translation adjustment	24,683				24,683
Balance at Jun. 30, 2011	$ 987,155	$ 261	$ 374,978	$ 548,592	$ 64,488	$ (9,006)	$ 7,842
Ending Balance, Shares at Jun. 30, 2011						(295)