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Share Capital - Shares (Share Capital Activity) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Schedule Of Capitalization Equity [Line Items]
Share options exercised, shares		13,594
Share options exercised	$ 163	$ 163
Share Capital
Schedule Of Capitalization Equity [Line Items]
Beginning balance, shares	25,684,000	25,672,983
Shares withheld for net settlement of shares issued, Number of shares		(10,341)
Share options exercised, shares	14,000	13,594
Issuance of vested shares, Number of shares		24,505
Ending balance, shares	25,700,741	25,700,741
Beginning balance		$ 3
Ending balance	$ 3	$ 3

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