Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Narrative (Details)

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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense on intangible assets $ 4,941 $ 5,216
Future amortization expense [Abstract]    
Future amortization expense for the remainder 2017 15,304  
Future amortization expense 2018 19,162  
Future amortization expense 2019 18,120  
Future amortization expense 2020 17,008  
Future amortization expense 2021 $ 16,252