SEGMENT REPORTING, Technology Segment Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Abstract]
Net sales	$ 1,821,019	$ 1,568,323	$ 1,588,404
Less: Revenue from financing and other	(68,084)	(71,850)	(69,308)
Revenue from contracts with customers	1,752,935	1,496,473	1,519,096
Technology Segment [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,733,036	1,507,954	1,530,138
Less: Revenue from financing and other	(14,943)	(23,850)	(15,631)
Revenue from contracts with customers	1,718,093	1,484,104	1,514,507
Technology Segment [Member] | Technology [Member]
Disaggregation of Revenue [Abstract]
Net sales	250,485	251,683	324,239
Technology Segment [Member] | Telecom, Media & Entertainment [Member]
Disaggregation of Revenue [Abstract]
Net sales	502,408	371,913	289,958
Technology Segment [Member] | Financial Services [Member]
Disaggregation of Revenue [Abstract]
Net sales	155,160	198,761	191,679
Technology Segment [Member] | State and Local Government and Educational Institutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	241,769	245,919	243,092
Technology Segment [Member] | Health Care [Member]
Disaggregation of Revenue [Abstract]
Net sales	270,481	200,067	233,894
Technology Segment [Member] | All others [Member]
Disaggregation of Revenue [Abstract]
Net sales	312,733	239,611	247,276
Technology Segment [Member] | Cisco Systems [Member]
Disaggregation of Revenue [Abstract]
Net sales	672,821	537,041	607,719
Technology Segment [Member] | NetApp [Member]
Disaggregation of Revenue [Abstract]
Net sales	91,948	58,020	59,812
Technology Segment [Member] | HP Inc. & HPE [Member]
Disaggregation of Revenue [Abstract]
Net sales	56,171	59,838	71,802
Technology Segment [Member] | Dell / EMC [Member]
Disaggregation of Revenue [Abstract]
Net sales	148,782	107,336	84,939
Technology Segment [Member] | Arista Networks [Member]
Disaggregation of Revenue [Abstract]
Net sales	44,280	51,789	75,281
Technology Segment [Member] | Juniper Networks [Member]
Disaggregation of Revenue [Abstract]
Net sales	92,965	91,946	68,339
Technology Segment [Member] | All others [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 626,069	$ 601,984	$ 562,246