RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Narrative (Details) $ in Thousands	12 Months Ended				24 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($) leasedOfficeSpace	Mar. 31, 2021 USD ($)	Mar. 31, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	$ 7,940	$ 4,227	$ 7,792
Number of leased office space exited | leasedOfficeSpace			8
ROU asset group impairments and adjustments	85	1,946	$ 24,599		$ 26,500
Operating lease, ROU asset, impairment loss	22,200
Leasehold improvements	4,300
Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,868	4,079
Restructuring reserve	5,434	4,605	5,632		4,605
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,900	4,200		$ 1,700
Employee Severance | Continuing Operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,940	4,227
Restructuring reserve	3,529	1,680	759		$ 1,680
Employee Severance | Restructuring Activity 2024
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	100
Employee Severance | Restructuring Activity 2025
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3,500
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	2,700	2,700	$ 2,700
Restructuring reserve	1,400
Facility Closing | Restructuring Activity 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,400
Restructuring reserve	500
United States
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace			5
United States | Employee Severance | Restructuring Activity 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	100
United States, Europe and Asia Pacific | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	200
Restructuring reserve related charges	$ 7,700	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