BUSINESS SEGMENTS (Details) - Summary of Segment Assets - USD ($) $ in Thousands	Dec. 31, 2018	Oct. 01, 2018	Sep. 30, 2018
Segment assets:
Continuing Assets	$ 2,071,555		$ 2,081,650
Assets of discontinued operations	3,234		3,240
Total Assets	2,074,789	$ 2,085,933	2,084,890
Home And Building Products [Member]
Segment assets:
Continuing Assets	1,647,069		1,631,631
Telephonics [Member]
Segment assets:
Continuing Assets	324,567		346,907
Operating Segments [Member]
Segment assets:
Continuing Assets	1,971,636		1,978,538
Corporate, Non-Segment [Member]
Segment assets:
Continuing Assets	$ 99,919		$ 103,112