OPERATING SEGMENTS (Details 1) - USD ($) $ in Thousands	Jan. 31, 2021	Oct. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 3,565,584	$ 3,547,711
Other Primarily Corporate and Intersegment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	548,912	523,374
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,122,774	1,127,666
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,893,898	$ 1,896,671