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RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | 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 | $ 28 | $ 1,283 | $ 605 | $ 2,754 |  |  |  |  |
Number of leased office space exited | leasedOfficeSpace |  |  |  |  |  |  | 8 |  |
ROU asset group impairments and adjustments | 78 | $ 0 | 42 | $ 1,946 |  | $ 26,500 | $ 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 |  |  | 600 |  |  | 4,200 |  | $ 1,700 |
Employee Severance | Restructuring Activity 2024 |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Restructuring reserve | 100 |  | 100 |  |  |  |  |  |
Facility Closing |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Restructuring charges and adjustments |  |  |  |  |  | 2,800 | $ 2,800 |  |
Restructuring reserve | 1,500 |  | 1,500 |  |  |  |  |  |
Facility Closing | Forecast |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Restructuring charges and adjustments |  |  |  |  | $ 2,800 |  |  |  |
Facility Closing | Restructuring Activity 2017 |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |
Restructuring charges and adjustments |  |  | 7,300 |  |  |  |  |  |
Restructuring reserve | $ 700 |  | 700 |  |  |  |  |  |
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 |  |  | 500 |  |  |  |  |  |
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 |  |

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