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Equity - Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
Stock-based compensation |  |  |
Stock repurchase programs, authorized amount |  |  | $ 200,000,000
Common shares repurchased (in shares) | 18,403 | 51,735 |
Repurchases of common stock | $ 1,379,000 | $ 3,363,000 |
Amount remaining available for future stock repurchases | $ 145,300,000 |  |
Restricted Stock Units (RSUs) |  |  |
Stock-based compensation |  |  |
Shares issued (in shares) | 287,000 |  |
Restricted Stock Units (RSUs) | Member of Board of Directors | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting period | 1 year |  |
Restricted Stock Units (RSUs) | Minimum |  |  |
Stock-based compensation |  |  |
Vesting period | 3 years |  |
Restricted Stock Units (RSUs) | Minimum | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting period | 3 years |  |
Restricted Stock Units (RSUs) | Maximum |  |  |
Stock-based compensation |  |  |
Vesting period | 4 years |  |
Restricted Stock Units (RSUs) | Maximum | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting period | 5 years |  |
Performance Shares |  |  |
Stock-based compensation |  |  |
Shares issued (in shares) | 87,000 |  |
Performance Shares | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting period | 3 years |  |
Performance Shares | Minimum | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting rights, percentage | 0.00% |  |
Performance Shares | Maximum | 2017 Stock Incentive Plan |  |  |
Stock-based compensation |  |  |
Vesting rights, percentage | 200.00% |  |

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