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Geographic Data (Tables)
3 Months Ended
Dec. 31, 2012
Segments, Geographical Areas [Abstract]  
Revenue by Geographic Region
The following table presents our revenues by geographic region:
 
Three Months Ended December 31,
 
2012
 
2011
United States
$
103,391

 
$
84,837

Europe
14,227

 
11,728

Other
5,180

 
3,819

Total revenues
$
122,798

 
$
100,384