Segments - Net Sales by Main Product Lines (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2024	Jul. 31, 2023
Revenue from external customers
Total net sales	$ 1,448,456	$ 1,409,600
Wallboard
Revenue from external customers
Total net sales	587,929	571,425
Complementary products
Revenue from external customers
Total net sales	443,513	426,210
Steel framing
Revenue from external customers
Total net sales	209,858	236,760
Ceilings
Revenue from external customers
Total net sales	$ 207,156	$ 175,205

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details