Summary Of Significant Accounting Policies (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Sep. 30, 2014
Financial assets:
Cash equivalents	[1]	$ 91,216	$ 101,113
Forward contracts		507	339
Financial assets		91,723	101,452
Financial liabilities:
Contingent consideration		13,000	15,191
Forward contracts		46	911
Financial liabilities		13,046	16,102
Level 1 [Member]
Financial assets:
Cash equivalents	[1]	91,216	101,113
Forward contracts		0	0
Financial assets		91,216	101,113
Financial liabilities:
Contingent consideration		0	0
Forward contracts		0	0
Financial liabilities		0	0
Level 2 [Member]
Financial assets:
Cash equivalents		0	0
Forward contracts		507	339
Financial assets		507	339
Financial liabilities:
Contingent consideration		0	0
Forward contracts		46	911
Financial liabilities		46	911
Level 3 [Member]
Financial assets:
Cash equivalents		0	0
Forward contracts		0	0
Financial assets		0	0
Financial liabilities:
Contingent consideration		13,000	15,191
Forward contracts		0	0
Financial liabilities		$ 13,000	$ 15,191

[1] Money market funds and time deposits.