OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Segment Reporting Information [Line Items]
Revenues		$ 687,841	$ 538,813	$ 1,308,756	$ 1,029,156
Depreciation		9,762	7,366	18,148	14,696
Amortization		19,962	16,119	38,636	32,011
Operating Income (Loss)		157,090	122,777	286,524	221,599
Capital expenditures		11,075	7,520	21,921	16,211
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(6,120)	(4,893)	(11,542)	(9,567)
Depreciation	[1]	265	247	535	493
Amortization	[1]	274	283	548	570
Operating Income (Loss)	[1]	(10,801)	(9,408)	(21,513)	(18,550)
Capital expenditures	[1]	116	64	220	103
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		392,202	306,313	763,480	578,994
Depreciation		3,974	3,693	8,152	7,411
Amortization		6,555	5,749	13,286	11,262
Operating Income (Loss)		99,912	66,197	183,521	118,573
Capital expenditures		3,990	4,531	10,643	8,113
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		301,759	237,393	556,818	459,729
Depreciation		5,523	3,426	9,461	6,792
Amortization		13,133	10,087	24,802	20,179
Operating Income (Loss)		67,979	65,988	124,516	121,576
Capital expenditures		$ 6,969	$ 2,925	$ 11,058	$ 7,995

[1] Intersegment activity principally consists of net sales from the ETG to the FSG