Derivative Financial Instruments (Fair Value And Classification Of Derivatives On The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017
Designated as Hedging Instrument | Other Current Assets | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	$ 228	$ 551
Designated as Hedging Instrument | Other Current Assets | Interest Rate Swaps
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	1,412	552
Designated as Hedging Instrument | Other Current Assets | Net Investment Hedge
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	240	0
Designated as Hedging Instrument | Other Assets | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	11	50
Designated as Hedging Instrument | Other Assets | Interest Rate Swaps
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	592	314
Designated as Hedging Instrument | Total asset derivative
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	2,483	1,467
Designated as Hedging Instrument | Other Accrued Liabilities | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	1,355	1,434
Designated as Hedging Instrument | Other Accrued Liabilities | Interest Rate Swaps
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	0	10
Designated as Hedging Instrument | Other Long-Term Liabilities | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	494	244
Designated as Hedging Instrument | Other Long-Term Liabilities | Interest Rate Swaps
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	0	15
Designated as Hedging Instrument | Total liability derivatives
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	1,849	1,703
Not Designated As Hedging Instruments | Other Current Assets | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative assets as hedging instruments, fair value	101	95
Not Designated As Hedging Instruments | Other Accrued Liabilities | Foreign Currency Contracts
Derivative Instruments, Fair Value
Derivative liabilities as hedging instruments, fair value	$ 469	$ 383