INFORMATION ABOUT THE COMPANY'S OPERATIONS IN DIFFERENT INDUSTRY SEGMENTS (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Segment Reporting Information [Line Items]
Pre Tax Gain Included Other Revenues	$ 1,318	$ 0	$ 1,318

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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