FAIR VALUE MEASUREMENTS (Details Textuals) $ in Thousands, € in Millions	9 Months Ended
	Jul. 31, 2019 USD ($)	Jul. 31, 2019 EUR (€)	Oct. 31, 2018 USD ($)	Oct. 31, 2018 EUR (€)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, asset	$ 148,601		$ 132,737
Change in value of contingent consideration	3,734
Contingent consideration	19,430		20,875
Flight Support Group [Member] | FY2019 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent Consideration Arrangements, Value, High	6,400
Contingent consideration	2,200
Flight Support Group [Member] | FY 2015 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in value of contingent consideration	6,800
Accrued Liabilities, Current			5,800
Flight Support Group [Member] | FY 2015 Acquisition [Member] | Euro Member Countries, Euro
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in value of contingent consideration | €		€ 6.1
Accrued Liabilities, Current | €				€ 5.1
Electronic Technologies Group [Member] | FY 2017 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent Consideration Arrangements, Value, High	20,000
Contingent consideration	16,300		13,900
Electronic Technologies Group [Member] | FY 2016 Acquisition [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent Consideration Arrangements, Value, High	1,400
Change in value of contingent consideration	300
Contingent consideration	900
Aggregate LCP Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, liability	148,000		125,800
Closed Plan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, liability			5,900
Aggregate LCP Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, asset	$ 148,600		126,800
Closed Plan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, asset			$ 5,900