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Equity Transactions - Restricted Stock Units and Restricted Stock Awards (Details) - RSUs & RSAs - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
RSU & RSA |  |
Outstanding as of beginning of period (in shares) | 1,545,285 |
Granted (in shares) | 330,545 |
Exercised (in shares) | (811,773) |
Forfeited (in shares) | (146,676) |
Outstanding as of end of period (in shares) | 917,381 | 1,545,285
Expected to vest as of end of period (in shares) | 666,092 |
Weighted- Average Grant Date Fair Value |  |
Outstanding as of beginning of period (in dollars per share) | $ 6.84 |
Granted (in dollars per share) | 14.08 |
Exercised (in dollars per share) | 6.78 |
Forfeited (in dollars per share) | 8.98 |
Outstanding as of end of period (in dollars per share) | 9.15 | $ 6.84
Expected to vest as of end of period (in dollars per share) | $ 10.17 |
Additional Disclosures |  |
Outstanding, weighted-average remaining contractual term | 1 year 11 months 23 days | 1 year 10 months 6 days
Expected to vest as of end of period, weighted-average remaining contractual term | 2 years 4 months 6 days |
Aggregate Fair Value |  |
Outstanding as of beginning of period, aggregate fair value | $ 11,528 |
Granted, aggregate fair value | 4,653 |
Exercised, aggregate fair value | 13,780 |
Forfeited, aggregate fair value | 2,688 |
Outstanding as of end of period, aggregate fair value | 19,825 | $ 11,528
Expected to vest as of end of period, aggregate fair value | $ 14,394 |

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