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Major Customer And Geographic Information (Schedule Of Major Customer Data) (Details) | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
--- | --- | --- | ---
IMOD [Member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenues | 23.00% | 23.00% | 21.00%
U.S. Government [Member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenues | 8.00% | 7.00% | 6.00%

X
- Definition The percentage of net product revenue to total net revenue from the sale of goods as of year end. + References No definition available. + Details
Name: | us-gaap_SalesRevenueGoodsNetPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_SegmentReportingRevenueReconcilingItemLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration