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Share-Based Payments - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Apr. 16, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Recognized stock-based compensation expense | $ 4,212 | $ 3,889 | $ 12,727 | $ 12,084 |
Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized stock-based compensation expense | 300 |  | 300 |  |
RSU |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized stock-based compensation expense | $ 22,900 |  | $ 22,900 |  |
LTIP |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  | 7,000,000
Common stock, shares delivered (in shares) |  |  | 503,411 | 433,585 |
LTIP | RSU |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock units vested (in shares) |  |  | 868,421 | 730,980 |
Adjustments to additional paid in capital, income tax deficiency from share-based compensation |  |  | $ 6,500 | $ 5,000 |

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