SEGMENT REPORTING - Technology Segment Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
SEGMENT REPORTING [Abstract]
Net sales	$ 608,826	$ 493,372	$ 1,246,141	$ 1,029,024
Technology Segment [Member]
SEGMENT REPORTING [Abstract]
Revenue from contracts with customers	608,775	493,280	1,245,979	1,028,781
Technology Segment [Member] | Telecom, Media & Entertainment [Member]
SEGMENT REPORTING [Abstract]
Net sales	176,772	108,870	361,751	226,423
Technology Segment [Member] | SLED [Member]
SEGMENT REPORTING [Abstract]
Net sales	87,246	97,687	177,808	189,783
Technology Segment [Member] | Healthcare [Member]
SEGMENT REPORTING [Abstract]
Net sales	82,285	78,235	156,576	153,515
Technology Segment [Member] | Technology [Member]
SEGMENT REPORTING [Abstract]
Net sales	69,549	54,988	152,296	164,094
Technology Segment [Member] | Financial Services [Member]
SEGMENT REPORTING [Abstract]
Net sales	63,079	34,759	110,579	84,484
Technology Segment [Member] | All Others [Member]
SEGMENT REPORTING [Abstract]
Net sales	129,844	118,741	286,969	210,482
Product Segment [Member]
SEGMENT REPORTING [Abstract]
Net sales	485,014	389,613	1,005,909	846,925
Revenue from contracts with customers	485,014	389,613	1,005,909	846,925
Product Segment [Member] | Networking [Member]
SEGMENT REPORTING [Abstract]
Net sales	258,156	186,776	476,358	421,516
Product Segment [Member] | Cloud [Member]
SEGMENT REPORTING [Abstract]
Net sales	128,270	121,336	335,266	258,567
Product Segment [Member] | Security [Member]
SEGMENT REPORTING [Abstract]
Net sales	65,889	41,209	126,996	89,214
Product Segment [Member] | Collaboration [Member]
SEGMENT REPORTING [Abstract]
Net sales	16,558	17,988	28,315	38,887
Product Segment [Member] | Other [Member]
SEGMENT REPORTING [Abstract]
Net sales	16,141	22,304	38,974	38,741
Professional Services Segment [Member]
SEGMENT REPORTING [Abstract]
Net sales	76,344	61,900	148,073	99,179
Revenue from contracts with customers	76,344	61,900	148,073	99,179
Managed Services Segment [Member]
SEGMENT REPORTING [Abstract]
Net sales	47,417	41,767	91,997	82,677
Revenue from contracts with customers	$ 47,417	$ 41,767	$ 91,997	$ 82,677