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Goodwill and Other Intangible Assets - Amount and Classification of Amortization Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense in continuing operations $ 1,380 $ 1,306 $ 4,205 $ 4,064
Amortization expense in discontinued operations 0 334 0 1,491
Operations expense 25 30 77 91
Interest expense 798 1,616 3,423 4,166
Total expense from the amortization of definite-lived intangible assets $ 2,203 $ 3,286 $ 7,705 $ 9,812