OPERATING SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Segment Reporting Information [Line Items]
Revenues		$ 722,902	$ 569,528	$ 2,031,658	$ 1,598,684
Depreciation		9,801	7,693	27,949	22,389
Amortization		19,730	16,126	58,366	48,137
Operating Income (Loss)		149,367	128,747	435,891	350,346
Capital expenditures		12,255	8,146	34,176	24,357
Corporate And Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(8,005)	(4,934)	(19,547)	(14,501)
Depreciation	[1]	265	250	800	743
Amortization	[1]	572	274	1,120	844
Operating Income (Loss)	[1]	(13,962)	(10,038)	(35,475)	(28,588)
Capital expenditures	[1]	(53)	296	167	399
Flight Support Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		405,040	330,259	1,168,520	909,253
Depreciation		4,141	4,082	12,293	11,493
Amortization		6,074	6,281	19,360	17,543
Operating Income (Loss)		89,172	70,756	272,693	189,329
Capital expenditures		4,791	3,971	15,434	12,084
Electronic Technologies Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues		325,867	244,203	882,685	703,932
Depreciation		5,395	3,361	14,856	10,153
Amortization		13,084	9,571	37,886	29,750
Operating Income (Loss)		74,157	68,029	198,673	189,605
Capital expenditures		$ 7,517	$ 3,879	$ 18,575	$ 11,874

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