BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 643,153	$ 649,384
United States
Disaggregation of Revenue [Line Items]
Revenue	530,800	532,967
Europe
Disaggregation of Revenue [Line Items]
Revenue	5,353	4,712
Canada
Disaggregation of Revenue [Line Items]
Revenue	35,796	38,471
Australia
Disaggregation of Revenue [Line Items]
Revenue	64,871	66,217
All other countries
Disaggregation of Revenue [Line Items]
Revenue	6,333	7,017
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	395,791	396,573
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	379,628	379,300
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	108	16
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	14,768	15,355
Home and Building Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	0	0
Home and Building Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	1,287	1,902
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	186,541	190,730
Home and Building Products | Commercial
Disaggregation of Revenue [Line Items]
Revenue	176,993	169,514
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	32,257	36,329
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	247,362	252,811
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	151,172	153,667
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	5,245	4,696
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	21,028	23,116
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	64,871	66,217
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	5,046	5,115
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	76,064	81,706
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	14,005	12,487
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	69,278	68,497
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	14,777	17,093
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	$ 73,238	$ 73,028