CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Net sales
Total	$ 2,225,302	$ 2,067,718	$ 1,821,019
Cost of sales
Total	1,674,509	1,550,194	1,360,037
Gross profit	550,793	517,524	460,982
Selling, general, and administrative	367,734	333,520	297,117
Depreciation and amortization	21,025	13,709	14,646
Interest and financing costs	3,777	4,133	1,903
Operating expenses	392,536	351,362	313,666
Operating income	158,257	166,162	147,316
Other income (expense), net	2,836	(3,188)	(432)
Earnings before tax	161,093	162,974	146,884
Provision for income taxes	45,317	43,618	41,284
Net earnings	$ 115,776	$ 119,356	$ 105,600
Net earnings per common share-basic (in dollars per share)	$ 4.35	$ 4.49	$ 3.96
Net earnings per common share-diluted (in dollars per share)	$ 4.33	$ 4.48	$ 3.93
Weighted average common shares outstanding-basic (in shares)	26,610	26,569	26,638
Weighted average common shares outstanding-diluted (in shares)	26,717	26,654	26,866
Product [Member]
Net sales
Total	$ 1,933,225	$ 1,803,275	$ 1,580,394
Cost of sales
Total	1,493,293	1,379,500	1,210,943
Services [Member]
Net sales
Total	292,077	264,443	240,625
Cost of sales
Total	$ 181,216	$ 170,694	$ 149,094