EARNINGS PER SHARE (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 11,475	$ 115,834	$ 104,629	$ 206,874
Distributed and undistributed (earnings) to unvested restricted stock	(163)	(1,755)	(1,493)	(3,186)
Distributed and undistributed earnings to common shareholders—Basic	$ 11,312	$ 114,079	$ 103,136	$ 203,688
Weighted average shares outstanding—Basic (in shares)	22,513	22,399	22,508	22,391
Weighted average shares outstanding—Diluted (in shares)	22,513	22,399	22,508	22,391
Earnings per common share-Basic (in usd per share)	$ 0.50	$ 5.09	$ 4.58	$ 9.10
Earnings per common share-Diluted (in usd per share)	$ 0.50	$ 5.09	$ 4.58	$ 9.10