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Equity - Additional Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended | 10 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 28, 2020 | Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Oct. 28, 2020 | Nov. 05, 2019
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock shares authorized amount |  |  |  |  |  |  |  | $ 200,000,000
Stock repurchased, value |  | $ 8,520,000 | $ 100,000,000 | $ 82,517,000 | $ 108,520,000 | $ 89,005,000 |  |
Stock repurchased, price per share |  | $ 6.91 | $ 9.21 |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchased, value | $ 11,480,000 |  |  |  |  |  | $ 120,000,000 |
Stock repurchased, price per share | $ 6.66 |  |  |  |  |  | $ 8.69 |
Stock repurchase amount available for future repurchase | $ 80,000,000 |  |  |  |  |  | $ 80,000,000 |
Common Stock [Member] |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchased |  | 1,233,190 | 10,856,865 | 6,252,000 | 12,090,000 | 6,726,000 |  |
Stock repurchased, value |  | $ 12,000 |  | $ 62,000 | $ 121,000 | $ 67,000 |  |
Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Stock repurchased | 1,723,103 |  |  |  |  |  | 13,813,158 |

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