Ur-Energy Inc. Quarterly report pursuant to Section 13 or 15(d)

Shareholders Equity and Capital Stock (Details 7)	3 Months Ended
Shareholders Equity and Capital Stock (Details 7)	Mar. 31, 2021 USD ($) $ / shares shares
Exercise price $1.00
Exercise price \| $ / shares	$ 1.00
Number of warrants \| shares	13,062,878
Remaining contractual life (years)	6 months
Aggregate Intrinsic Value \| $	$ 653,144
Expiry	Sep. 25, 2021
Exercise price $0.75
Exercise price \| $ / shares	$ 0.75
Number of warrants \| shares	8,038,000
Remaining contractual life (years)	1 year 3 months 18 days
Aggregate Intrinsic Value \| $	$ 1,406,650,000
Expiry	Aug. 04, 2022
Exercise price $1.35
Exercise price \| $ / shares	$ 1.35
Number of warrants \| shares	16,930,530
Remaining contractual life (years)	2 years 9 months 18 days
Aggregate Intrinsic Value \| $	$ 0
Expiry	Feb. 04, 2024
Exercise price $1.10
Exercise price \| $ / shares	$ 1.10
Number of warrants \| shares	38,031,408
Remaining contractual life (years)	1 year 8 months 12 days
Aggregate Intrinsic Value \| $	$ 2,059,794,000