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Composition Of Certain Financial Statement Captions (Schedule Of Future Amortization Expense) (Details) (USD $)
In Thousands
12 Months Ended
Sep. 30, 2011
Composition Of Certain Financial Statement Captions [Abstract] 
2012$ 12,697
201311,923
201410,279
20157,823
20165,654
Thereafter3,197
Total$ 51,573