CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 1,091,907	$ 875,614	$ 1,767,698	$ 1,490,075
Cost of sales	508,888	453,693	838,255	773,402
Gross profit	583,019	421,921	929,443	716,673
Selling, general, and administrative expenses	358,402	294,090	634,090	532,501
Income from operations (Note 10)	224,617	127,831	295,353	184,172
Interest income	(10,089)	(1,884)	(21,376)	(3,098)
Interest expense	1,011	1,038	2,016	2,090
Other income, net	(622)	(241)	(968)	(740)
Total other income, net	(9,700)	(1,087)	(20,328)	(1,748)
Income before income taxes	234,317	128,918	315,681	185,920
Income tax expense (Note 4)	55,770	27,394	73,582	39,547
Net income	178,547	101,524	242,099	146,373
Other comprehensive loss, net of tax
Unrealized gain on cash flow hedges	3,403	1,088	3,755	1,846
Foreign currency translation loss	(5,520)	(13,529)	(14,171)	(29,253)
Total other comprehensive loss, net of tax	(2,117)	(12,441)	(10,416)	(27,407)
Comprehensive income	$ 176,430	$ 89,083	$ 231,683	$ 118,966
Net income per share
Basic (in dollars per share)	$ 6.86	$ 3.83	$ 9.28	$ 5.49
Diluted (in dollars per share)	$ 6.82	$ 3.80	$ 9.22	$ 5.46
Weighted-average common shares outstanding (Note 9)
Basic (in shares)	26,031	26,517	26,098	26,646
Diluted (in shares)	26,178	26,682	26,251	26,815