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Share-Based Compensation - Summary of Share-Based Compensation Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Payment Arrangement [Abstract] |  |  |
Options | $ 8,312 | $ 9,145 | $ 5,344
Restricted stock | 3,030 | 2,654 | 2,518
Total | $ 11,342 | $ 11,799 | $ 7,862

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