UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net sales
Total	$ 493,706		$ 458,017		$ 952,065	$ 874,666
Cost of sales
Total	360,402		335,015		705,238	646,152
Gross profit	133,304		123,002		246,827	228,514
Selling, general, and administrative	84,704		74,504		161,471	143,279
Depreciation and amortization	3,568		3,853		6,778	7,779
Interest and financing costs	925		342		1,288	701
Operating expenses	89,197		78,699		169,537	151,759
Operating income	44,107		44,303		77,290	76,755
Other income (expense)	(3,866)		(325)		(6,019)	(202)
Earnings before tax	40,241		43,978		71,271	76,553
Provision for income taxes	11,772		12,565		20,463	21,622
Net earnings	$ 28,469	$ 22,339	$ 31,413	$ 23,518	$ 50,808	$ 54,931
Net earnings per common share-basic (in dollars per share)	$ 1.07		$ 1.18		$ 1.91	$ 2.06
Net earnings per common share-diluted (in dollars per share)	$ 1.07		$ 1.17		$ 1.91	$ 2.04
Weighted average common shares outstanding-basic (in shares)	26,578		26,664		26,546	26,666
Weighted average common shares outstanding-diluted (in shares)	26,623		26,864		26,671	26,862
Product [Member]
Net sales
Total	$ 428,545		$ 397,160		$ 823,795	$ 758,217
Cost of sales
Total	317,127		297,629		621,337	574,856
Services [Member]
Net sales
Total	65,161		60,857		128,270	116,449
Cost of sales
Total	$ 43,275		$ 37,386		$ 83,901	$ 71,296