Segment Reporting - Adjusted EBITDA by Segment (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | $ 135,867 | $ 126,208 | $ 613,689 | $ 595,139 |
| Operating Segments | K-12 | ||||
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | 10,462 | 25,941 | 278,808 | 302,915 |
| Operating Segments | Higher Education | ||||
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | 107,780 | 80,847 | 274,567 | 232,815 |
| Operating Segments | Global Professional | ||||
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | 11,024 | 10,172 | 33,794 | 33,282 |
| Operating Segments | International | ||||
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | 4,082 | 6,436 | 18,671 | 30,557 |
| Other | ||||
| Segment Reporting Information [Line Items] | ||||
| Total Adjusted EBITDA | $ 2,519 | $ 2,812 | $ 7,849 | $ (4,430) |