RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Narrative (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2023 USD ($) leasedOfficeSpace	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	$ 88				$ 739
Number of leased office space exited | leasedOfficeSpace	8
ROU asset group impairments		$ 24,600	$ 24,600	$ 24,600
Operating lease, ROU asset, impairment loss	$ 20,500
Leasehold improvements	4,100
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	100
Employee Severance | Restructuring Activity 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,800					$ 1,700
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	2,900
Restructuring reserve	2,100
Facility Closing | Restructuring Activity 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,300
Restructuring reserve	$ 1,900
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 charges and adjustments	$ 100
Restructuring reserve related charges						$ 1,700
MASSACHUSETTS
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace	1
PENNSYLVANIA
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
CALIFORNIA
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
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 And France
Restructuring Cost and Reserve [Line Items]
Number of leased office space exited | leasedOfficeSpace	1