BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 591,749	$ 541,523
United States
Disaggregation of Revenue [Line Items]
Revenue	459,475	419,973
Europe
Disaggregation of Revenue [Line Items]
Revenue	18,367	13,156
Canada
Disaggregation of Revenue [Line Items]
Revenue	34,641	33,603
Australia
Disaggregation of Revenue [Line Items]
Revenue	74,349	69,540
All other countries
Disaggregation of Revenue [Line Items]
Revenue	4,917	5,251
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	283,173	291,042
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	164,899	183,442
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	18,330	13,156
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	22,628	22,115
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	74,349	69,540
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	2,967	2,789
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	38,759	45,600
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	130,235	139,248
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	10,327	13,515
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	11,306	9,531
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	92,546	83,148
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	308,576	250,481
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	294,576	236,531
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	37	0
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	12,013	11,488
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	1,950	2,462
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	145,085	126,115
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	32,702	28,427
Home and Building Products | Commercial construction
Disaggregation of Revenue [Line Items]
Revenue	$ 130,789	$ 95,939