REVENUE (Disaggregation of Revenue, by Industry) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 417,902	$ 506,275
Flight Support Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		199,334	301,067
Flight Support Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		135,056	239,923
Flight Support Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		54,044	50,253
Flight Support Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	10,234	10,891
Electronic Technologies Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		223,550	208,411
Electronic Technologies Group [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		17,551	20,338
Electronic Technologies Group [Member] | Defense and Space [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		142,092	133,110
Electronic Technologies Group [Member] | Other Industries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[2]	63,907	54,963
Corporate And Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ (4,982)	$ (3,203)

[1] Principally industrial products.

[2] Principally other electronics and medical products.