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Related Party Transactions (Narrative) (Details) (Jimmy S.M. Lee, Executive Chairman, USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Jimmy S.M. Lee, Executive Chairman
     
Related Party Transaction [Line Items]      
Revenues from transactions with related party $ 429 $ 458 $ 938
Accounts receivable, related parties $ 65 $ 30