Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Income Statement [Abstract]
Net sales	$ 1,150,551	$ 812,856	$ 2,192,627	$ 1,615,429
Cost of sales (exclusive of depreciation and amortization shown separately below)	778,681	547,785	1,484,924	1,089,900
Gross profit	371,870	265,071	707,703	525,529
Operating expenses:
Selling, general and administrative	230,531	188,352	444,612	371,464
Depreciation and amortization	29,403	27,245	57,117	54,342
Total operating expenses	259,934	215,597	501,729	425,806
Operating income	111,936	49,474	205,974	99,723
Other (expense) income:
Interest expense	(14,744)	(13,525)	(28,401)	(27,606)
Other income, net	938	797	1,730	1,452
Total other expense, net	(13,806)	(12,728)	(26,671)	(26,154)
Income before taxes	98,130	36,746	179,303	73,569
Provision for income taxes	23,769	8,277	43,740	17,881
Net income	$ 74,361	$ 28,469	$ 135,563	$ 55,688
Weighted average common shares outstanding:
Basic (in shares)	43,135	42,723	43,112	42,674
Diluted (in shares)	43,894	43,174	43,933	43,096
Net income per common share:
Basic (in dollars per share)	$ 1.72	$ 0.67	$ 3.14	$ 1.30
Diluted (in dollars per share)	$ 1.69	$ 0.66	$ 3.09	$ 1.29
Comprehensive income
Net income	$ 74,361	$ 28,469	$ 135,563	$ 55,688
Foreign currency translation income (loss)	4,114	3,159	(4,119)	19,440
Changes in other comprehensive income, net of tax	3,289	2,844	5,251	3,803
Comprehensive income	$ 81,764	$ 34,472	$ 136,695	$ 78,931