RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended			24 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 leasedOfficeSpace	Mar. 31, 2021 USD ($)	Mar. 31, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	$ 178	$ 88
Number of leased office space exited | leasedOfficeSpace				8
ROU asset group impairments and adjustments						$ 26,500
Operating lease, ROU asset, impairment loss						22,200
Leasehold improvements			$ 4,300			4,300
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	200		4,200		$ 1,700
Restructuring reserve	300
Employee Severance | Restructuring Activity 2024
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	500
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments						$ 2,800
Restructuring reserve	1,600
Facility Closing | Restructuring Activity 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,300
Restructuring reserve	1,100
United States
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				5
United States | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve related charges	100
United States | Employee Severance | Restructuring Activity 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	$ 100
United States and Asia Pacific | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve related charges			4,000
United States and Europe | Employee Severance | Restructuring Activity 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments			$ 200
Boston
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1
Philadelphia
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1
Phoenix
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1
San Francisco
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				2
Europe
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				3
The Netherlands
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1
London, England
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1
Paris, France
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace				1