SEGMENT REPORTING - Segment Reporting Information, by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Reportable Segment Information [Abstract]
Net sales	$ 2,068,789	$ 2,225,302	$ 2,067,718
Cost of sales	1,499,668	1,674,509	1,550,194
Gross profit	569,121	550,793	517,524
Selling, general, and administrative	399,744	367,734	333,520
Depreciation and amortization	25,753	21,025	13,709
Interest and financing costs	2,211	3,777	4,133
Operating income	141,413	158,257	166,162
Other income (expense), net	7,426	2,836	(3,188)
Earnings before tax	148,839	161,093	162,974
Purchases of property, equipment, and operating lease equipment:	6,603	8,503	9,380
Product Segment [Member]
Reportable Segment Information [Abstract]
Net sales	1,608,768	1,883,809	1,750,802
Product Segment [Member] | Operating Segments [Member]
Reportable Segment Information [Abstract]
Net sales	1,608,768	1,883,809	1,750,802
Cost of sales	1,235,211	1,486,191	1,370,061
Gross profit	373,557	397,618	380,741
Professional Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	229,030	154,549	151,785
Professional Services Segment [Member] | Operating Segments [Member]
Reportable Segment Information [Abstract]
Net sales	229,030	154,549	151,785
Cost of sales	138,513	86,355	90,191
Gross profit	90,517	68,194	61,594
Managed Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	171,347	137,528	112,658
Managed Services Segment [Member] | Operating Segments [Member]
Reportable Segment Information [Abstract]
Net sales	171,347	137,528	112,658
Cost of sales	120,040	94,861	80,503
Gross profit	51,307	42,667	32,155
Financing Segment [Member]
Reportable Segment Information [Abstract]
Net sales	59,644	49,416	52,473
Financing Segment [Member] | Operating Segments [Member]
Reportable Segment Information [Abstract]
Net sales	59,644	49,416	52,473
Cost of sales	5,904	7,102	9,439
Gross profit	53,740	42,314	43,034
Selling, general, and administrative	16,409	14,194	15,635
Depreciation and amortization	0	74	111
Interest and financing costs	2,211	2,349	1,236
Operating income	35,120	25,697	26,052
Purchases of property, equipment, and operating lease equipment:	1,387	1,049	1,687
Technology Segment [Member] | Operating Segments [Member]
Reportable Segment Information [Abstract]
Selling, general, and administrative	383,335	353,540	317,885
Depreciation and amortization	25,753	20,951	13,598
Interest and financing costs	0	1,428	2,897
Operating income	106,293	132,560	140,110
Purchases of property, equipment, and operating lease equipment:	$ 5,216	$ 7,454	$ 7,693