Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation (Summary of Liability for Cash-Settled RSU Awards) (Details)

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Share-based Compensation (Summary of Liability for Cash-Settled RSU Awards) (Details) - Cash-Settled RSUs - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Other current liabilities $ 850 $ 182
Other long-term liabilities 4,928 1,336
Total Cash-Settled RSU Awards $ 5,778 $ 1,518