Segment Information (Schedule Of Revenues From Each Customer Who Individually Accounted For 10% Or More Of Total Revenues) (Details) | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |
Cardinal Health, Inc. [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Percentage of total revenues from customers | 18.00% | 17.00% | 17.00% | 17.00% |
McKesson Corp. [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Percentage of total revenues from customers | 15.00% | 14.00% | 15.00% | 14.00% |
AmerisourceBergen Corp. [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Percentage of total revenues from customers | 13.00% | 13.00% | 13.00% | 12.00% |