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Goodwill and Other Identifiable Intangible Assets, Net (Goodwill Rollforward) (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Goodwill [Roll Forward]    
Beginning balance $ 100,183 $ 101,484
Acquisition of Bluenica 10,985 0
Foreign currency translation adjustment (1,288) (901)
Ending balance $ 109,880 $ 100,583