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RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) leasedOfficeSpace
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments | $ 149 | $ 178 |  |  |
Number of leased office space exited | leasedOfficeSpace |  |  |  |  | 8
ROU asset group impairments and adjustments |  |  |  | $ 26,500 | $ 26,500
Operating lease, ROU asset, impairment loss |  |  |  |  | 22,200
Leasehold improvements, impairment loss |  |  |  |  | 4,300
Continuing Operations |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments | 423 |  |  |  |
Restructuring reserve | 2,287 |  | $ 5,434 |  |
Employee Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments | 100 |  | 7,900 | 4,200 |
Employee Severance | Continuing Operations |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments | 149 |  |  |  |
Restructuring reserve | 422 |  | 3,529 |  |
Employee Severance | Restructuring Activity 2025 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve | 300 |  |  |  |
Employee Severance | Restructuring Activity 2024 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve | 100 |  |  |  |
Facility Closing |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  |  |  | $ 2,500
Restructuring reserve | 1,100 |  |  |  |
Facility Closing | Restructuring Activity 2017 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments | 7,900 |  |  |  |
Restructuring reserve related charges | 500 |  |  |  |
Restructuring reserve | 800 |  |  |  |
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 |  |  | 200 | 4,000 |
United States | Employee Severance | Restructuring Activity 2024 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  | 200 |  |
United States | Employee Severance | Restructuring Activity 2023 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  |  | 4,000 |
United States, Europe and Asia Pacific | Employee Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve related charges |  |  | $ 7,700 |  |
United States and Europe | Employee Severance | Restructuring Activity 2021 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  |  | 200 |
United States and Europe | Employee Severance | Restructuring Activity 2023 |  |  |  |  |
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
San Francisco and Phoenix | Facility Closing |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve related charges | $ (200) |  |  |  |

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