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Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | Dec. 31, 2010
Condensed Consolidated Statements Of Comprehensive Income [Abstract] |  |  |  |  |
Net income | $ 19,867 | $ 22,469 | $ 49,081 | $ 60,748 |
Other comprehensive income (loss): |  |  |  |  |
Foreign currency translation adjustments | (9,013) | 6,283 | (3,176) | (1,740) |
Unrealized gain (loss) on investments, net of tax | (156) | 543 | 598 | 791 |
Other | 546 | (30) | 579 | (29) |
Comprehensive income | 11,244 | 29,265 | 47,082 | 59,770 |
Foreign currency translation adjustments | (5,947) |  | (5,947) |  | (2,771)
Unrealized loss on investments, net of tax | (3,255) |  | (3,255) |  | (3,853)
Other | 241 |  | 241 |  | (338)
Accumulated other comprehensive loss | $ (8,961) |  | $ (8,961) |  | $ (6,962)

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