Stockholders' Equity - Stock-Based Compensation Expense (Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Stockholders' Equity Note [Abstract] | ||||
| Capitalized stock-based compensation | $ 1.7 | $ 2.1 | $ 5.0 | $ 5.8 |