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v3.25.3

Stock-Based Compensation - Stock Options (Details) - BRBR Stock Options - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Share-based Payment Award [Line Items] |  |
Stock options outstanding, beginning balance | 258,987 |
Stock options granted in period | 0 |
Stock options exercised in period | (11,000) |
Stock options forfeited in period | 0 |
Stock options expired in period | 0 |
Stock options outstanding, ending balance | 247,987 | 258,987
Stock options vested and expected to vest | 247,987 |
Stock options exercisable | 247,987 |
Stock options outstanding, weighted average exercise price | $ 17.76 | $ 17.74
Stock options granted in period, weighted average exercise price | 0 |
Stock options exercised in period, weighted average exercise price | 17.30 |
Stock options forfeited in period, weighted average exercise price | 0 |
Stock options expired in period, weighted average exercise price | 0 |
Stock options vested and expected to vest, weighted average exercise price | 17.76 |
Stock options exercisable in period, weighted average exercise price | $ 17.76 |
Stock options outstanding, weighted average remaining contractual term | 4 years 9 months 29 days |
Stock options vested and expected to vest, weighted average remaining contractual term | 4 years 9 months 29 days |
Stock options exercisable, weighted average remaining contractual term | 4 years 9 months 29 days |
Stock options outstanding, intrinsic value | $ 4.6 |
Stock options vested and expected to vest, intrinsic value | 4.6 |
Stock options exercisable, intrinsic value | 4.6 |
Stock options, exercises in period, intrinsic value | 0.2 |
Proceeds from exercises of stock awards | $ 0.2 |

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