BUSINESS SEGMENTS - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue	$ 516,550	$ 358,114	$ 1,432,413	$ 1,094,198
Ames True Temper Inc [Member]
Segment Reporting Information [Line Items]
Revenue	180,834	136,132	503,744	419,763
ClosetMaid LLC [Member]
Segment Reporting Information [Line Items]
Revenue	81,564	0	233,592	0
Clopay Building Products [Member]
Segment Reporting Information [Line Items]
Revenue	177,723	140,349	470,071	406,437
Home And Building Products [Member]
Segment Reporting Information [Line Items]
Revenue	440,121	276,481	1,207,407	826,200
Telephonics [Member]
Segment Reporting Information [Line Items]
Revenue	$ 76,429	$ 81,633	$ 225,006	$ 267,998