CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands	Total	Redeemable Noncontrolling Interests [Member]	HEICO Common Stock [Member]	Class A Common Stock [Member]	Capital In Excess Of Par Value [Member]	Deferred Compensation Obligation [Member]	HEICO Stock Held By Irrevocable Trust [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total Shareholders Equity [Member]
Opening Balance at Oct. 31, 2011		$ 65,430	$ 171	$ 250	$ 226,120	$ 522	$ (522)	$ 3,033	$ 299,497	$ 91,083	$ 620,154
Comprehensive income	67,098	6,945	0	0	0	0	0	(10,264)	61,356	9,061	60,153
Cash dividends		0	0	0	0	0	0	0	(5,689)	0	(5,689)
Five-for-four common stock split		0	42	63	(105)	0	0	0	(16)	0	(16)
Tax benefit from stock option exercises		0	0	0	13,144	0	0	0	0	0	13,144
Stock option compensation expense		0	0	0	2,888	0	0	0	0	0	2,888
Proceeds from stock option exercises		0	0	1	386	0	0	0	0	0	387
Redemptions of common stock related to stock option exercises	(307)	0	0	0	(307)	0	0	0	0	0	(307)
Acquisitions of noncontrolling interests		(7,616)	0	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests		(6,794)	0	0	0	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests		(93)	0	0	0	0	0	0	93	0	93
Other		1,224	0	0	(1)	0	0	(149)	(78)	0	(228)
Ending Balance at Jul. 31, 2012		59,096	213	314	242,125	522	(522)	(7,380)	355,163	100,144	690,579
Opening Balance at Apr. 30, 2012
Comprehensive income	22,644
Adjustments to redemption amount of redeemable noncontrolling interests		(600)
Ending Balance at Jul. 31, 2012		59,096
Opening Balance at Oct. 31, 2012	719,759	67,166	213	315	244,632	823	(823)	(3,572)	375,085	103,086	719,759
Comprehensive income	89,640	6,127	0	0	0	0	0	842	72,605	10,066	83,513
Cash dividends		0	0	0	0	0	0	0	(120,361)	0	(120,361)
Issuance of common stock to HEICO Savings and Investment Plan		0	0	0	2,625	0	0	0	0	0	2,625
Tax benefit from stock option exercises		0	0	0	5,180	0	0	0	0	0	5,180
Stock option compensation expense		0	0	0	3,455	0	0	0	0	0	3,455
Proceeds from stock option exercises		0	1	1	344	0	0	0	0	0	346
Redemptions of common stock related to stock option exercises	(2,364)	0	0	0	(2,364)	0	0	0	0	0	(2,364)
Acquisitions of noncontrolling interests		(16,610)	0	0	0	0	0	0	0	0	0
Distributions to noncontrolling interests		(5,968)	0	0	0	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests		1,327	0	0	0	0	0	0	(1,327)	0	(1,327)
Deferred compensation obligation		0	0	0	0	105	(105)	0	0	0	0
Other		402	0	1	0	0	0	3	(2)	24	26
Ending Balance at Jul. 31, 2013	690,852	52,444	214	317	253,872	928	(928)	(2,727)	326,000	113,176	690,852
Opening Balance at Apr. 30, 2013
Comprehensive income	35,366
Adjustments to redemption amount of redeemable noncontrolling interests		300
Ending Balance at Jul. 31, 2013	$ 690,852	$ 52,444