Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Other Intangible Assets (Details)

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Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Sep. 30, 2017
Other Intangible Assets [Abstract]    
Carrying Amount $ 578,487 $ 522,408
Accumulated Amortization (113,609) (98,026)
Net 464,878 424,382
Trade Names Not Subject to Amortization    
Other Intangible Assets [Abstract]    
Carrying Amount 126,047 168,467
Net 126,047 168,467
Trade names    
Other Intangible Assets [Abstract]    
Carrying Amount 53,821 5,522
Accumulated Amortization (3,389) (2,030)
Net 50,432 3,492
Customer relationships    
Other Intangible Assets [Abstract]    
Carrying Amount 377,300 333,632
Accumulated Amortization (97,796) (84,560)
Net 279,504 249,072
Copyrights/patents/other    
Other Intangible Assets [Abstract]    
Carrying Amount 21,319 14,787
Accumulated Amortization (12,424) (11,436)
Net $ 8,895 $ 3,351