Leases - Lease Expense Incurred (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jul. 31, 2020	Jul. 31, 2020
Leases [Abstract]
Operating lease expense	$ 4,036	$ 14,253
Short-term lease expense	876	2,204
Variable lease expense	20	116
Total lease expense	$ 4,932	$ 16,573