SUBSEQUENT EVENT SUBSEQUENT EVENT (Details Textual) - Subsequent Event [Member]		1 Months Ended
	Dec. 15, 2017	Nov. 30, 2017
Subsequent Event [Line Items]
Subsequent Event, Description	The stock split is payable to shareholders of record as of January 3, 2018 and the Company expects to distribute the additional shares to shareholders on January 17, 2018. Accordingly, the prices of both the Company's Class A Common Stock and Common Stock are anticipated to begin trading on a post-split basis on January 18, 2018. None of the applicable share and per share information in these consolidated financial statements on Form 10-K has been adjusted retrospectively to give effect to the pending 5-for-4 stock split.
Subsequent Event, Date	Dec. 15, 2017
Electronic Technologies Group [Member] | IDC [Member]
Subsequent Event [Line Items]
Subsequent Event, Date		Nov. 30, 2017
Business Acquisition, Name of Acquired Entity		Interface Displays & Controls, Inc.
Business Acquisition, Description of Acquired Entity		IDC designs and manufactures electronic products for aviation, marine, military, fighting vehicles, and embedded computing markets.