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NET INCOME PER SHARE ATTRIBUTABLE TO HEICO SHAREHOLDERS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Numerator:
Net income attributable to HEICO	$ 45,686	$ 38,657	$ 86,613	$ 69,928
Denominator:
Weighted Average Number of Shares Outstanding, Basic	84,221	83,653	84,182	83,624
Effect of dilutive stock options	2,416	1,382	2,338	1,356
Weighted Average Number of Shares Outstanding, Diluted	86,637	85,035	86,520	84,980
Earnings Per Share, Basic	$ 0.54	$ 0.46	$ 1.03	$ 0.84
Earnings Per Share, Diluted	$ 0.53	$ 0.45	$ 1.00	$ 0.82
Anti-dilutive stock options excluded	462	921	316	907

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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