GOODWILL AND OTHER INTANGIBLES (Details) - Summary of Changes in Carrying Value of Goodwill $ in Thousands	9 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Roll Forward]
September 30, 2016	$ 361,185
Other adjustments including currency translations	220
June 30, 2017	361,405
Home & Building Products [Member]
Goodwill [Roll Forward]
September 30, 2016	287,617
Other adjustments including currency translations	(29)
June 30, 2017	287,588
Telephonics [Member]
Goodwill [Roll Forward]
September 30, 2016	18,545
June 30, 2017	18,545
Plastics [Member]
Goodwill [Roll Forward]
September 30, 2016	55,023
Other adjustments including currency translations	249
June 30, 2017	$ 55,272