Common Shares - Summary Of Deferred Share Units Activity (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($) $ / shares shares	Feb. 28, 2021 USD ($) shares	Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense \| $			$ 444	$ 421
Deferred Stock Units (DSU) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issues for each DSU (at end of board members' team).			1
Outstanding, Number of units, beginning of period (in shares) \| shares			930,000	726,000	726,000
Granted, Number of units (in shares) \| shares	324,000	204,000	324,000		204,000
Unvested, Number of units, end of period (in shares) \| shares	1,254,000		1,254,000		930,000
Outstanding, weighted average fair value, beginning of period (in dollars per share) \| $ / shares			$ 0.68	$ 0.57	$ 0.57
Granted, Weighted average fair value (in dollars per share) \| $ / shares			0.84		1.04
Unvested, weighted average fair value, end of period (in dollars per share) \| $ / shares	$ 0.72		$ 0.72		$ 0.68
Allocated Share-based Compensation Expense \| $	$ 272	$ 212	$ 272	$ 212

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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