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Common Shares - Unrecognized Compensation (Details) - Restricted Stock Units (RSUs) [Member]
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense related to unvested awards $ 458
Weighted average unrecognized compensation recognition period 1 year 2 months 12 days