SUBSEQUENT EVENT SUBSEQUENT EVENT (Details Textuals)	1 Months Ended
	Aug. 31, 2018
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event, Description	In August 2018, the Company, through a subsidiary of HEICO Flight Support Corp., acquired 100% of the business and assets of Optical Display Engineering ("ODE"). ODE is a Federal Aviation Administration ("FAA")-authorized Part 145 Repair Station focusing on the repair of LCD screens and display modules for aviation displays used in civilian and military aircraft. ODE also holds FAA-Parts Manufacturer Approval authority to supply products that it repairs. The purchase price of this acquisition was paid in cash, principally using cash provided by operating activities and the total consideration for the acquisition is not material or significant to the Company’s condensed consolidated financial statements.