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SEGMENT AND GEOGRAPHICAL INFORMATION - Revenue and Assets by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | $ 574,957 | $ 466,989 | $ 1,088,566 | $ 882,818 |
Segment profit | 189,963 | 142,609 | 347,175 | 262,724 |
Corporate expenses | 444,288 | 376,712 | 862,329 | 719,194 |
Other income, net | (5,419) | (3,296) | (9,725) | (6,301) |
Income before provision for income taxes | 136,088 | 93,573 | 235,962 | 169,925 |
Total assets | 3,212,751 |  | 3,212,751 |  | $ 3,170,759
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total assets | 1,521,505 |  | 1,521,505 |  | 1,510,244
Operating Segments | Corporate Finance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 364,028 | 281,684 | 692,445 | 508,735 |
Segment profit | 109,655 | 90,517 | 210,077 | 152,139 |
Total assets | 1,142,652 |  | 1,142,652 |  | 1,147,432
Operating Segments | Financial Restructuring |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 131,568 | 114,670 | 248,990 | 238,038 |
Segment profit | 60,919 | 32,499 | 100,068 | 76,093 |
Total assets | 206,187 |  | 206,187 |  | 192,185
Operating Segments | Financial Advisory Services |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | 79,361 | 70,635 | 147,131 | 136,045 |
Segment profit | 19,389 | 19,593 | 37,030 | 34,492 |
Total assets | 172,666 |  | 172,666 |  | 170,627
Corporate, Non-Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Corporate expenses | 59,294 | 52,332 | 120,938 | 99,100 |
Total assets | 1,691,246 |  | 1,691,246 |  | $ 1,660,515
Segment Reconciling Items |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other income, net | $ (5,419) | $ (3,296) | $ (9,725) | $ (6,301) |

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