Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	$ (57,583)
Other comprehensive income (loss), net of tax	6,128	$ (14,720)
Ending balance,	(51,455)
Unamortized net gains (losses) on derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	687	674
Other comprehensive income (loss) before reclassifications and tax	0	0
Tax impact	0	0
Reclassification adjustments, before tax	6	5
Tax impact	(2)	(2)
Other comprehensive income (loss), net of tax	4	3
Ending balance,	691	677
Net unrealized holding gains (losses) on available-for-sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	2,943	3,733
Other comprehensive income (loss) before reclassifications and tax	535	(1,080)
Tax impact	(208)	435
Reclassification adjustments, before tax	0	(21)
Tax impact	0	8
Other comprehensive income (loss), net of tax	327	(658)
Ending balance,	3,270	3,075
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	(61,213)	(52,993)
Other comprehensive income (loss) before reclassifications and tax	5,797	(14,065)
Tax impact	0	0
Reclassification adjustments, before tax	0	0
Tax impact	0	0
Other comprehensive income (loss), net of tax	5,797	(14,065)
Ending balance,	(55,416)	(67,058)
Total [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	(57,583)	(48,586)
Other comprehensive income (loss) before reclassifications and tax	6,332	(15,145)
Tax impact	(208)	435
Reclassification adjustments, before tax	6	(16)
Tax impact	(2)	6
Other comprehensive income (loss), net of tax	6,128	(14,720)
Ending balance,	$ (51,455)	$ (63,306)