Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 459,736	$ 431,954	$ 1,355,480	$ 1,270,624
Home center retailers
Disaggregation of Revenue [Line Items]
Net sales	225,046	216,819	649,712	613,932
Builders
Disaggregation of Revenue [Line Items]
Net sales	177,716	161,113	539,154	496,503
Independent dealers and distributors
Disaggregation of Revenue [Line Items]
Net sales	$ 56,974	$ 54,022	$ 166,614	$ 160,189