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Stock-Based Compensation (Schedule Of Outstanding Stock Options Currently Exercisable, Vested And Expected To Vest) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Share-based Compensation [Abstract]    
Stock options outstanding 32,079 70,768
Stock options outstanding, Weighted Average Remaining Contractual Life (in Years) 4 years 307 days  
Stock options outstanding, Weighted Average Exercise Price per Share $ 14.18 $ 9.53
Stock options outstanding, Aggregate Intrinsic Value $ 3,260  
Exercisable, Number of Shares 20,687  
Exercisable, Weighted Average Remaining Contractual Life (in Years) 3 years 164 days  
Exercisable, Weighted Average Exercise Price per Share $ 20.61  
Exercisable, Aggregate Intrinsic Value $ 1,969  
Vested and expected to vest, Number of Shares 31,550  
Vested and expected to vest, Weighted Average Remaining Contractual Life (in Years) 4 years 288 days  
Vested and expected to vest, Weighted Average Exercise Price per Share $ 14.37  
Vested and expected to vest, Aggregate Intrinsic Value $ 3,200