Segment And Geographic Information (Revenues By Major Geographic Area) (Details) (USD $)
In Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2011
|
Jun. 30, 2010
|
Jun. 30, 2011
|
Jun. 30, 2010
|
|
Total revenues | $ 193,329 | $ 178,595 | $ 374,370 | $ 351,293 |
United States [Member]
|
||||
Total revenues | 144,872 | 138,760 | 278,172 | 268,123 |
Europe [Member]
|
||||
Revenue from foreign countries | 25,209 | 20,076 | 50,296 | 44,228 |
Asia Pacific [Member]
|
||||
Revenue from foreign countries | 11,625 | 9,174 | 22,372 | 18,411 |
Other Foreign [Member]
|
||||
Revenue from foreign countries | $ 11,623 | $ 10,585 | $ 23,530 | $ 20,531 |