GOODWILL AND OTHER INTANGIBLE ASSETS (Schedule Of Intangible Assets Gross Carrying Amounts And Accumulated Amortization) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 365,965	$ 323,616
Less: accumulated amortization	69,103	56,955
Patents [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	927	917
Less: accumulated amortization	742	726
Net	185	191
Capitalized Software [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	60,216	54,003
Less: accumulated amortization	32,136	26,737
Net	28,080	27,266
Customer relationships [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	163,331	111,887
Less: accumulated amortization	35,005	28,633
Net	128,325	83,254
Other [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	5,255	2,777
Less: accumulated amortization	1,220	859
Net	4,035	1,918
Trade names [Member]
Goodwill and Other Intangible Assets [Line Items]
Trade names	$ 167,920	$ 119,128