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Basis of Presentation - Canada Emergency Wage Subsidy Program of 2020 - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2021
Canada Emergency Wage Subsidy Program of 2020 |  |
Recognition of reduction in compensation expense | $ 2,195,000 | $ 4,072,000

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