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Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Mar. 06, 2020 | Mar. 31, 2021 | Mar. 31, 2020 | Jul. 16, 2019
Accounting Policies [Abstract] |  |  |  |
Number of shares authorized to be repurchased |  |  |  | 2,250,000
Number of shares repurchased | 1,000,000 | 373,323 |  |
Average price per share repurchased | $ 15.19 | $ 15.86 |  |
Shares, non-dilutive (in shares) |  | 138,010 | 293,665 |
Net income |  | $ 20,422 | $ 11,655 |

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