EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Apr. 30, 2020	Jan. 31, 2020	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2020	Apr. 30, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 6,118	$ (38,576)	$ 40,636	$ (17,833)	$ (32,458)	$ 22,803
Distributed and undistributed (earnings) to unvested restricted stock	(81)		(597)		0	(340)
Distributed and undistributed earnings to common shareholders—Basic	$ 6,037		$ 40,039		$ (32,458)	$ 22,463
Weighted average shares outstanding—Basic (in shares)	21,943		21,830		21,939	21,822
Weighted average shares outstanding—Diluted (in shares)	21,943		21,830		21,939	21,822
Earnings per common share-Basic (in usd per share)	$ 0.28		$ 1.83		$ (1.48)	$ 1.03
Earnings per common share-Diluted (in usd per share)	$ 0.28		$ 1.83		$ (1.48)	$ 1.03