LEASES (Operating Lease Expense) (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Apr. 30, 2020	Apr. 30, 2020
Leases [Abstract]
Operating lease expense		$ 4,284	$ 8,544
Variable lease expense		708	1,323
Total operating lease expense (1)	[1]	$ 4,992	$ 9,867

[1] Excludes short-term lease expense, which is not material.