NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Numerator:
Net income attributable to HEICO	$ 23,128	$ 20,402	$ 61,356	$ 54,306
Denominator:
Weighted average common shares outstanding - basic (in shares)	52,695	52,161	52,651	51,965
Effect of dilutive stock options (in shares)	593	1,051	639	1,134
Weighted average common shares outstanding - diluted (in shares)	53,288	53,212	53,290	53,099
Net income per share attributable to HEICO shareholders:
Basic (in dollars per share)	$ 0.44	$ 0.39	$ 1.17	$ 1.05
Diluted (in dollars per share)	$ 0.43	$ 0.38	$ 1.15	$ 1.02
Anti-dilutive stock options excluded (in shares)	720	341	667	444