SEGMENT REPORTING, Reportable Segment Information (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2024 USD ($) Segment	Jun. 30, 2023 USD ($)
SEGMENT REPORTING [Abstract]
Number of business segments | Segment	4
Reportable Segment Information [Abstract]
Net sales	$ 544,538	$ 574,175
Gross profit	134,481	142,273
Operating expenses	99,012	95,941
Operating income	35,469	46,332
Other income (expense), net	2,073	190
Earnings before tax	37,542	46,522
Depreciation and amortization	4,819	4,792
Interest and financing costs	585	851
Selected Financial Data - Statement of Cash Flow [Abstract]
Purchases of property, equipment and operating lease equipment	1,967	3,698
Technology Segment [Member]
Reportable Segment Information [Abstract]
Net sales	535,501	565,685
Product Segment [Member]
Reportable Segment Information [Abstract]
Net sales	457,312	498,166
Professional Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	37,279	35,556
Managed Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	40,910	31,963
Financing Segment [Member]
Reportable Segment Information [Abstract]
Net sales	9,037	8,490
Operating Segments [Member] | Technology Segment [Member]
Reportable Segment Information [Abstract]
Operating expenses	94,903	92,414
Operating income	31,891	43,498
Depreciation and amortization	4,819	4,764
Interest and financing costs	0	550
Selected Financial Data - Statement of Cash Flow [Abstract]
Purchases of property, equipment and operating lease equipment	580	2,785
Operating Segments [Member] | Product Segment [Member]
Reportable Segment Information [Abstract]
Net sales	457,312	498,166
Gross profit	98,505	111,391
Operating Segments [Member] | Professional Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	37,279	35,556
Gross profit	15,455	14,724
Operating Segments [Member] | Managed Services Segment [Member]
Reportable Segment Information [Abstract]
Net sales	40,910	31,963
Gross profit	12,834	9,797
Operating Segments [Member] | Financing Segment [Member]
Reportable Segment Information [Abstract]
Net sales	9,037	8,490
Gross profit	7,687	6,361
Operating expenses	4,109	3,527
Operating income	3,578	2,834
Depreciation and amortization	0	28
Interest and financing costs	585	301
Selected Financial Data - Statement of Cash Flow [Abstract]
Purchases of property, equipment and operating lease equipment	$ 1,387	$ 913