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Detail Of Selected Balance Sheet Accounts (Activity In Allowance For Doubtful Accounts)(Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Detail Of Selected Balance Sheet Accounts [Abstract]      
Balance at beginning of year $ 391 $ 907  
Increase (decrease) to bad debt expense 842 (114) 410
Deductions for uncollectible accounts written off, net of recoveries 142 (394)  
Increase (decrease) due to foreign currency translation 24 (8)  
Balance at end of year $ 1,399 $ 391 $ 907