SEGMENT REPORTING, Technology Segment Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Abstract]
Net sales	$ 515,172	$ 587,611	$ 1,059,710	$ 1,161,786
Less: Revenue from financing and other	(29,095)	(17,709)	(40,537)	(32,532)
Revenue from contracts with customers	486,077	569,902	1,019,173	1,129,254
Product [Member]
Disaggregation of Revenue [Abstract]
Net sales	411,505	516,609	877,854	1,023,265
Technology Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	493,280	571,939	1,028,781	1,137,624
Less: Revenue from financing and other	(7,855)	(4,872)	(11,365)	(12,495)
Revenue from contracts with customers	485,425	567,067	1,017,416	1,125,129
Technology Segment [Member] | Telecom, Media & Entertainment [Member]
Disaggregation of Revenue [Abstract]
Net sales	108,870	124,306	226,423	265,641
Technology Segment [Member] | State and Local Government and Educational Institutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	97,687	94,906	189,783	204,311
Technology Segment [Member] | Healthcare [Member]
Disaggregation of Revenue [Abstract]
Net sales	78,235	72,022	153,515	158,678
Technology Segment [Member] | Technology [Member]
Disaggregation of Revenue [Abstract]
Net sales	54,988	110,948	164,094	184,351
Technology Segment [Member] | Financial Services [Member]
Disaggregation of Revenue [Abstract]
Net sales	34,759	69,885	84,484	135,575
Technology Segment [Member] | All Others [Member]
Disaggregation of Revenue [Abstract]
Net sales	118,741	99,872	210,482	189,068
Product Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	389,613	500,937	846,925	999,103
Less: Revenue from financing and other	(7,855)	(4,872)	(11,365)	(12,495)
Revenue from contracts with customers	381,758	496,065	835,560	986,608
Product Segment [Member] | Networking [Member]
Disaggregation of Revenue [Abstract]
Net sales	186,776	268,636	421,516	513,824
Product Segment [Member] | Cloud [Member]
Disaggregation of Revenue [Abstract]
Net sales	121,336	135,068	258,567	307,112
Product Segment [Member] | Security [Member]
Disaggregation of Revenue [Abstract]
Net sales	41,209	51,886	89,214	97,682
Product Segment [Member] | Collaboration [Member]
Disaggregation of Revenue [Abstract]
Net sales	17,988	27,083	38,887	40,039
Product Segment [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	22,304	18,264	38,741	40,446
Professional Services Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	61,900	38,270	99,179	73,826
Less: Revenue from financing and other	0	0	0	0
Revenue from contracts with customers	61,900	38,270	99,179	73,826
Managed Services Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	41,767	32,732	82,677	64,695
Less: Revenue from financing and other	0	0	0	0
Revenue from contracts with customers	$ 41,767	$ 32,732	$ 82,677	$ 64,695