STOCK-BASED COMPENSATION - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Share-Based Compensation Expense [Line Items] | ||
| Total stock-based compensation expense | $ 6.5 | $ 9.5 |
| Cost of revenue | ||
| Share-Based Compensation Expense [Line Items] | ||
| Total stock-based compensation expense | 0.2 | 0.3 |
| Research and development expense | ||
| Share-Based Compensation Expense [Line Items] | ||
| Total stock-based compensation expense | 1.2 | 2.1 |
| Sales and marketing expense | ||
| Share-Based Compensation Expense [Line Items] | ||
| Total stock-based compensation expense | 0.8 | 1.5 |
| General and administrative expense | ||
| Share-Based Compensation Expense [Line Items] | ||
| Total stock-based compensation expense | $ 4.3 | $ 5.6 |