Ur-Energy Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Sales (Details)

Sales (Details) - USD ($) $ in Thousands	12 Months Ended
Sales (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Sales
Sales	$ 23,496	$ 38,368	$ 27,305
Disposal fee income	43	77
Sales Revenue, Goods, Net [Member]
Sales
Sales	23,453	38,291
Company A [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Sales	237
Company B [Member]
Sales
Sales		1,777
Company B [Member] \| Sale Of Purchased Inventory [Member]
Sales
Sales	15,636	15,340
Company C [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Sales		3,141
Company C [Member] \| Sale Of Purchased Inventory [Member]
Sales
Sales	7,580	10,212
Company D [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Sales		7,821
Company A, B, C, D, E [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Sales	237	12,739
Company B and C [Member] \| Sale Of Purchased Inventory [Member]
Sales
Sales	$ 23,216	$ 25,552
Customer Concentration Risk [Member]
Sales
Concentration Risk, Percentage	100.00%	100.00%
Disposal Fee Income Concentration Risk Percentage	0.2	0.2
Customer Concentration Risk [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Total sales, risk percent	99.80%	99.80%
Customer Concentration Risk [Member] \| Company A [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	1.00%	0.00%
Customer Concentration Risk [Member] \| Company B [Member]
Sales
Concentration Risk, Percentage	0.00%	4.60%
Customer Concentration Risk [Member] \| Company B [Member] \| Sale Of Purchased Inventory [Member]
Sales
Concentration Risk, Percentage	66.50%	40.00%
Customer Concentration Risk [Member] \| Company C [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	0.00%	8.20%
Customer Concentration Risk [Member] \| Company C [Member] \| Sale Of Purchased Inventory [Member]
Sales
Concentration Risk, Percentage	32.30%	26.60%
Customer Concentration Risk [Member] \| Company D [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	0.00%	20.40%
Customer Concentration Risk [Member] \| Company A, B, C, D, E [Member] \| Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	1.00%	33.20%
Customer Concentration Risk [Member] \| Company B and C [Member] \| Sale Of Purchased Inventory [Member]
Sales
Concentration Risk, Percentage	98.80%	66.60%