Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 30, 2022	Jan. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,288,653	$ 1,153,595	$ 1,150,551	$ 1,042,076	$ 932,203	$ 751,191	$ 812,856	$ 802,573	$ 4,634,875	$ 3,298,823	$ 3,241,307
Gross Profit	412,800	367,772	371,870	335,833	293,850	243,324	265,071	260,458	1,488,275	1,062,703	1,063,214
Net income	$ 76,496	$ 61,383	$ 74,361	$ 61,202	$ 33,746	$ 16,126	$ 28,469	$ 27,219	$ 273,442	$ 105,560	$ 23,381
Weighted average shares outstanding:
Basic (in shares)	42,977	43,094	43,135	43,089	42,994	42,726	42,723	42,624	43,075	42,765	41,853
Diluted (in shares)	43,776	43,945	43,894	43,972	43,828	43,361	43,174	43,017	43,898	43,343	42,504
Net income per share:
Basic (in dollars per share)	$ 1.78	$ 1.42	$ 1.72	$ 1.42	$ 0.78	$ 0.38	$ 0.67	$ 0.64	$ 6.35	$ 2.47	$ 0.56
Diluted (in dollars per share)	$ 1.75	$ 1.40	$ 1.69	$ 1.39	$ 0.77	$ 0.37	$ 0.66	$ 0.63	$ 6.23	$ 2.44	$ 0.55