Interest and Other Income (Loss), Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Other Income and Expenses [Abstract]
Interest income	$ 2,444	$ 1,282
Gains (losses) on non-hedge designated foreign currency forward contracts	(699)	1,024
Foreign currency exchange gain (loss)	13	(2,417)
Other	(183)	481
Interest and other income (loss), net	$ 1,575	$ 370