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
Dec. 31, 2019
Sep. 30, 2019
Other Intangible Assets [Abstract]    
Carrying Amount $ 576,910 $ 574,146
Accumulated Amortization (191,754) (173,496)
Net 385,156 400,650
Trade Names Not Subject to Amortization    
Other Intangible Assets [Abstract]    
Carrying Amount 30,540 30,540
Net 30,540 30,540
Trade names    
Other Intangible Assets [Abstract]    
Carrying Amount 148,730 148,628
Accumulated Amortization (33,085) (22,653)
Net 115,645 125,975
Customer relationships    
Other Intangible Assets [Abstract]    
Carrying Amount 377,079 374,515
Accumulated Amortization (144,867) (137,330)
Net 232,212 237,185
Copyrights/patents/other    
Other Intangible Assets [Abstract]    
Carrying Amount 20,561 20,463
Accumulated Amortization (13,802) (13,513)
Net $ 6,759 $ 6,950