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Stockholders' Equity (Tables) | 6 Months Ended
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Mar. 31, 2022
Equity [Abstract] |
Schedule of Stock-Based Compensation Expense Related to Stock Options and RSUs | The following table summarizes stock-based compensation expense related to RSUs, stock options, and ESPP shares, which was allocated as follows (amounts shown in thousands):
| Three Months Ended March 31, |  | Six Months Ended March 31,
| 2022 |  | 2021 |  | 2022 |  | 2021
Cost of revenue | $ | 70 |  |  | $ | 82 |  |  | $ | 167 |  |  | $ | 169 |
Selling and marketing | 1,134 |  |  | 892 |  |  | 2,078 |  |  | 1,680 |
Research and development | 868 |  |  | 777 |  |  | 1,804 |  |  | 1,517 |
General and administrative | 1,226 |  |  | 1,217 |  |  | 2,380 |  |  | 2,349 |
Stock-based compensation expense included in expenses | $ | 3,298 |  |  | $ | 2,968 |  |  | $ | 6,429 |  |  | $ | 5,715 |
Schedule of Stock Option Activity | The following table summarizes stock option activity under the Company’s equity plans during the six months ended March 31, 2022:
| Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (in Years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding at September 30, 2021 | 816,717 |  |  | $ | 7.42 |  |  | 5.8 |  | $ | 9,046 |
Granted | — |  |  | $ | — |  |  |  |  |
Exercised | (25,625) |  |  | $ | 7.98 |  |  |  |  |
Canceled | — |  |  | $ | — |  |  |  |  |
Outstanding at March 31, 2022 | 791,092 |  |  | $ | 7.41 |  |  | 5.4 |  | 5,747 |
Vested and Expected to Vest at March 31, 2022 | 791,092 |  |  | $ | 7.41 |  |  | 5.4 |  | 5,747 |
Exercisable at March 31, 2022 | 662,498 |  |  | $ | 6.98 |  |  | 5.1 |  | 5,094 |
Schedule of RSU Activity | The following table summarizes RSU activity under the Company’s equity plans during the six months ended March 31, 2022:
| Number of Shares |  | Weighted-Average Fair Market Value Per Share
Outstanding at September 30, 2021 | 2,411,267 |  |  | $ | 9.99 |
Granted | 911,383 |  |  | 16.65 |
Settled | (796,390) |  |  | 9.15 |
Canceled | (174,552) |  |  | 10.57 |
Outstanding at March 31, 2022 | 2,351,708 |  |  | 12.53 |
Schedule of Performance RSU Activity | The following table summarizes Performance RSU activity under the Company’s equity plans during the six months ended March 31, 2022:
| Number of Shares |  | Weighted-Average Fair Market Value Per Share
Outstanding at September 30, 2021 | 528,724 |  |  | $ | 9.17 |
Granted | 589,980 |  |  | 16.02 |
Settled | (176,864) |  |  | 8.42 |
Canceled | (18,952) |  |  | 12.84 |
Outstanding at March 31, 2022 | 922,888 |  |  | 13.62 |

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