RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Gains, Losses and Other Items (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Restructuring and Related Activities [Abstract]
Employee-related restructuring plan charges			$ 4,227,000	$ 7,792,000	$ (19,000)
Lease-related restructuring plan charges and adjustments			(148,000)	2,946,000	0
Early contract terminations			0	0	1,042,000
ROU asset group impairments and adjustments		$ 24,600,000	1,946,000	24,599,000	0
Goodwill impairment	$ 2,900,000		2,875,000	0	0
Other			13,000	0	0
Acquisition related costs			2,795,000	(21,000)	456,000
Total gains, losses and other items, net			$ 11,708,000	$ 35,316,000	$ 1,479,000