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ACQUISITIONS (Details 1) - USD ($) $ in Thousands	12 Months Ended
ACQUISITIONS (Details 1) - USD ($) $ in Thousands	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Assets acquired:
Goodwill	$ 766,639	$ 686,271	$ 688,489
Heico Flight Support Corp [Member] \| Reinhold Industries [Member]
Assets acquired:
Goodwill	76,424
Identifiable intangible assets	66,500
Inventories	10,753
Accounts receivable	8,830
Property, plant and equipment	7,994
Other assets	2,756
Total assets acquired, excluding cash	173,257
Liabilities assumed:
Deferred income taxes	25,613
Accrued expenses	6,994
Accounts payable	2,923
Defined benefit pension plan obligation, net	2,865
Other liabilities	390
Total liabilities assumed	38,785
Net assets acquired, excluding cash	$ 134,472