BUSINESS SEGMENTS - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 478,560	$ 383,807	$ 915,863	$ 736,084
Ames True Temper Inc [Member]
Segment Reporting Information [Line Items]
Revenue	182,928	162,907	322,910	283,631
Clopay Building Products [Member]
Segment Reporting Information [Line Items]
Revenue	138,112	122,628	292,348	266,088
ClosetMaid LLC [Member]
Segment Reporting Information [Line Items]
Revenue	75,268	0	152,028	0
Home And Building Products [Member]
Segment Reporting Information [Line Items]
Revenue	396,308	285,535	767,286	549,719
Telephonics [Member]
Segment Reporting Information [Line Items]
Revenue	$ 82,252	$ 98,272	$ 148,577	$ 186,365