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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Net income	$ 2,098	$ 3,491	$ 5,252	$ 6,654	$ 8,302	$ 6,500	$ 3,751	$ 2,937	$ 17,495	$ 21,490	$ 15,115
Undistributed earnings allocated to participating shares - Basic									(147)	(132)	(100)
Undistributed earnings allocated to participating shares - Diluted									(147)	(132)	(100)
Net income applicable to common shareholders - Basic									17,348	21,358	15,015
Net income applicable to common shareholders - Diluted									$ 17,348	$ 21,358	$ 15,015
Weighted average shares outstanding - Basic									6,759	6,700	6,615
Weighted average shares outstanding -Diluted									6,815	6,771	6,680
Stock options and contingently issuable securities									56	71	65
Income per share -Basic	$ 0.31	$ 0.51	$ 0.77	$ 0.98	$ 1.24	$ 0.96	$ 0.55	$ 0.44	$ 2.57	$ 3.19	$ 2.27
Income per share - Diluted	$ 0.31	$ 0.51	$ 0.76	$ 0.97	$ 1.22	$ 0.95	$ 0.55	$ 0.43	$ 2.55	$ 3.15	$ 2.25

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