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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Sep. 30, 2025
Share-based compensation |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) |  |  | 48,900,000 |  |
Number of available shares (in shares) | 2,500,000 |  |  |  |
Future expense for performance stock option units | $ 149,397 |  |  |  |
Share-Based Payment Arrangement, Nonemployee |  |  |  |  |
Share-based compensation |  |  |  |  |
Stock grants to non-employee directors (in shares) | 10,522 |  |  |  |
Forecast |  |  |  |  |
Share-based compensation |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) |  |  |  |  | 51,400,000
Habu |  |  |  |  |
Share-based compensation |  |  |  |  |
Non-cash stock-based compensation expense | $ 6,900 |  |  |  |
Business combination, contingent consideration, liability | 2,000 |  |  |  |
Business combination, contingent consideration, liability, expected costs | $ 4,900 |  |  |  |
Restricted stock units | Time Based Vesting |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) | 1,901,765 |  |  |  |
Aggregate fair value of restricted stock units granted | $ 56,400 |  |  |  |
Vested in period, fair value | $ 32,000 |  |  |  |
Restricted stock units | Time-Based Vesting Over Three Years |  |  |  |  |
Share-based compensation |  |  |  |  |
Vesting period | 3 years |  |  |  |
Restricted stock units | Performance stock |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) | 485,579 |  | 111,652 | 158,486 |
Aggregate fair value of restricted stock units granted | $ 16,100 |  |  |  |
The total fair value of performance-based restricted stock units | 11,100 |  |  |  |
Restricted stock units | Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) |  |  |  | 369,807 |
Restricted stock units | Performance Shares Vesting Total Shareholder Return | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 0.00% | 0.00% |
Restricted stock units | Performance Shares Vesting Total Shareholder Return | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 200.00% | 200.00% |
Restricted stock units | Habu |  |  |  |  |
Share-based compensation |  |  |  |  |
Share-based compensation expense | $ 25 | $ 213 |  |  |
Employee stock purchase plan |  |  |  |  |
Share-based compensation |  |  |  |  |
Stock issued during period, ESPP (in shares) | 98,684 |  |  |  |
Shares issued, price per share (in dollars per share) | $ 26.86 |  |  |  |
Stock issued during period, ESPP, value | $ 2,700 |  |  |  |
Share-based compensation expense | 398 | $ 448 |  |  |
Future expense for performance stock option units | $ 600 |  |  |  |
Stock Option and Equity Compensation Plans |  |  |  |  |
Share-based compensation |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) | 51,500,000 |  | 51,500,000 |  |
Shares which remained available for future grants (in shares) | 4,800,000 |  |  |  |
Stock Option and Equity Compensation Plans | Forecast |  |  |  |  |
Share-based compensation |  |  |  |  |
Total shares reserved for issuance since inception of the stock option and equity compensation plans (in shares) |  |  |  |  | 54,000,000.0
Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan | Restricted stock units | Performance stock |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) | 143,725 |  |  |  |
Aggregate fair value of restricted stock units granted | $ 6,000 |  |  |  |
Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan | Restricted stock units | Performance stock | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 0.00% |  |  |  |
Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan | Restricted stock units | Performance stock | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 200.00% |  |  |  |
Operating Metrics Performance Plan | Restricted stock units | Performance stock |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) | 335,363 |  |  |  |
Aggregate fair value of restricted stock units granted | $ 9,900 |  |  |  |
Operating Metrics Performance Plan | Restricted stock units | Performance stock | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 0.00% |  |  |  |
Operating Metrics Performance Plan | Restricted stock units | Performance stock | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 200.00% |  |  |  |
Operating Metrics Performance Plan | Restricted stock units | Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) |  |  | 260,532 |  |
Operating Metrics Performance Plan | Restricted stock units | Performance Shares Vesting Total Shareholder Return | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 0.00% | 0.00% |
Operating Metrics Performance Plan | Restricted stock units | Performance Shares Vesting Total Shareholder Return | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 200.00% | 200.00% |
International Operating Metrics Performance Plan | Restricted stock units | Performance stock |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) | 6,491 |  |  |  |
Aggregate fair value of restricted stock units granted | $ 200 |  |  |  |
International Operating Metrics Performance Plan | Restricted stock units | Performance stock | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 100.00% |  |  |  |
International Operating Metrics Performance Plan | Restricted stock units | Performance stock | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage | 0.00% |  |  |  |
International Operating Metrics Performance Plan | Restricted stock units | Performance-Based Restricted Stock Units Under The Total Shareholder Return Performance Plan |  |  |  |  |
Share-based compensation |  |  |  |  |
Granted (in shares) |  |  | 35,658 |  |
International Operating Metrics Performance Plan | Restricted stock units | Performance Shares Vesting Total Shareholder Return | Minimum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 0.00% |  |
International Operating Metrics Performance Plan | Restricted stock units | Performance Shares Vesting Total Shareholder Return | Maximum |  |  |  |  |
Share-based compensation |  |  |  |  |
Award vesting rights percentage |  |  | 100.00% |  |

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