SUBSEQUENT EVENT (Details Textuals) - Electronic Technologies Group [Member] - Subsequent Event [Member]	1 Months Ended
	Feb. 28, 2019
SST Inc [Member]
Subsequent Event [Line Items]
Subsequent Event, Description	In February 2019, the Company, through HEICO Electronic, acquired 85% of the stock of Solid Sealing Technology, Inc. ("SST"). SST designs and manufactures high-reliability ceramic-to-metal feedthroughs and connectors for demanding environments within the defense, industrial, life science, medical, research, semiconductor, and other markets. The purchase price of this acquisition was paid in cash principally using proceeds from the Company's revolving credit facility and the total consideration for the acquisition is not material or significant to the Company’s condensed consolidated financial statements.
Decavo [Member]
Subsequent Event [Line Items]
Subsequent Event, Description	In February 2019, the Company through the Flight Support Group, acquired 80.1% of the stock of Decavo, LLC ("Decavo"). Decavo designs and produces complex composite parts and assemblies incorporated into camera and related sensor assemblies and UAV airframes used in demanding defense and civilian applications. 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.