OPERATING SEGMENTS (Assets) (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Oct. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,461,635	$ 3,547,711
Other Primarily Corporate and Intersegment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	428,571	523,374
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,139,630	1,127,666
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,893,434	$ 1,896,671