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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Feb. 15, 2023 | Feb. 28, 2023 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2022
Restricted Stock Units (RSUs) |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Unvested restricted stock outstanding (in shares) |  |  | 295,417 |  | 239,862
Compensation expense |  |  | $ 2.5 | $ 1.4 |
Restricted Stock Units (RSUs) | Time Based Restricted Stock Unit |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Restricted Stock Units (RSUs) | Performance Based Restricted Stock Unit |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Compensation expense |  |  | $ 0.5 | $ 0.3 |
2014 Equity Incentive Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Plan, term extended | 5 years |  |  |  |
Number of additional shares authorized (in shares) | 600,000 |  |  |  |
Shares authorized (in shares) | 1,350,000 |  |  |  |
Non-Employee Director Equity Incentive Plan | Restricted Stock Units (RSUs) | Nonemployee-Director |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Restricted stock issued (in shares) |  | 16,800 |  |  |
Shares issued, price per share (in shares) |  | $ 43.22 |  |  |
Non-Employee Director Equity Incentive Plan | Restricted Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Shares issued under the plan (in shares) |  |  | 2,400 |  |
Non-Employee Director Equity Incentive Plan | Restricted Stock | Immediate Vesting |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting, percentage |  |  | 50.00% |  |
Non-Employee Director Equity Incentive Plan | Restricted Stock | Anniversary of Grant Date |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting, percentage |  |  | 50.00% |  |

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