THE COMPANY AND DESCRIPTION OF BUSINESS	12 Months Ended
Dec. 31, 2016
Accounting Policies [Abstract]
The Company and Description of Business	THE COMPANY AND DESCRIPTION OF BUSINESS Energy Fuels Inc. was incorporated under the laws of the Province of Alberta and was continued under the Business Corporations Act (Ontario). Energy Fuels Inc. and its subsidiary companies (collectively “the Company” or “EFI”) are engaged in uranium extraction, recovery and sales of uranium from mineral properties and the recycling of uranium bearing materials generated by third parties. As a part of these activities the Company also acquires, explores, evaluates and, if warranted, permits uranium properties. The Company’s final uranium product, uranium oxide concentrates (“U₃O₈” or “uranium concentrates”), is sold to customers for further processing into fuel for nuclear reactors. The Company is an exploration stage mining company as defined by the United States (“US”) Securities and Exchange Commission (“SEC”) Industry Guide 7 (“SEC Industry Guide 7”) as it has not established the existence of proven or probable reserves on any of our properties. The Company has two operating segments, the conventional uranium recovery segment (the “Conventional Uranium Segment”) and the in-situ uranium recovery segment (“ISR Uranium Segment”). The Conventional Uranium Segment The Conventional Uranium Segment consists of a standalone conventional uranium recovery facility (the “White Mesa Mill”), conventional mining projects located in the Colorado Plateau, Henry Mountains, Arizona Strip, and the Roca Honda project in New Mexico which are in the vicinity of the White Mesa Mill, and the Sheep Mountain Project in Wyoming. At December 31, 2016, other than shaft shaft-sinking and evaluation work at the Company's Canyon Project, the conventional mining projects in the vicinity of the White Mesa Mill and Sheep Mountain are on standby, being evaluated for continued mining activities and/or in process of being permitted. The White Mesa Mill also processes third party uranium bearing mineralized materials from mining and recycling activities. The ISR Uranium Segment The ISR Uranium Segment consists of a uranium recovery facility to recover from operating wellfields of the Nichols Ranch Project located in Wyoming. The Nichols Ranch Project also includes the Jane Dough property and the Hank Project. Additionally, the segment includes other mineral properties in the vicinity on the Nichols Ranch Project. These assets were acquired as part of the Company’s 2015 acquisition of Uranerz Energy Corporation (“Uranerz”) (See Note 5). In addition, the ISR segment includes the Alta Mesa ISR Project (the “Alta Mesa Project”) located in Texas. The Alta Mesa Project is a fully-permitted and licensed production facility that is not currently operating. The Alta Mesa Project was acquired on June 16, 2016 (see Note 4).

THE COMPANY AND DESCRIPTION OF BUSINESS

Energy Fuels Inc. was incorporated under the laws of the Province of Alberta and was continued under the Business Corporations Act (Ontario).

Energy Fuels Inc. and its subsidiary companies (collectively “the Company” or “EFI”) are engaged in uranium extraction, recovery and sales of uranium from mineral properties and the recycling of uranium bearing materials generated by third parties. As a part of these activities the Company also acquires, explores, evaluates and, if warranted, permits uranium properties. The Company’s final uranium product, uranium oxide concentrates (“U₃O₈” or “uranium concentrates”), is sold to customers for further processing into fuel for nuclear reactors.

The Company is an exploration stage mining company as defined by the United States (“US”) Securities and Exchange Commission (“SEC”) Industry Guide 7 (“SEC Industry Guide 7”) as it has not established the existence of proven or probable reserves on any of our properties.

The Company has two operating segments, the conventional uranium recovery segment (the “Conventional Uranium Segment”) and the in-situ uranium recovery segment (“ISR Uranium Segment”).

The Conventional Uranium Segment

The Conventional Uranium Segment consists of a standalone conventional uranium recovery facility (the “White Mesa Mill”), conventional mining projects located in the Colorado Plateau, Henry Mountains, Arizona Strip, and the Roca Honda project in New Mexico which are in the vicinity of the White Mesa Mill, and the Sheep Mountain Project in Wyoming. At December 31, 2016, other than shaft shaft-sinking and evaluation work at the Company's Canyon Project, the conventional mining projects in the vicinity of the White Mesa Mill and Sheep Mountain are on standby, being evaluated for continued mining activities and/or in process of being permitted. The White Mesa Mill also processes third party uranium bearing mineralized materials from mining and recycling activities.

The ISR Uranium Segment

The ISR Uranium Segment consists of a uranium recovery facility to recover from operating wellfields of the Nichols Ranch Project located in Wyoming. The Nichols Ranch Project also includes the Jane Dough property and the Hank Project. Additionally, the segment includes other mineral properties in the vicinity on the Nichols Ranch Project. These assets were acquired as part of the Company’s 2015 acquisition of Uranerz Energy Corporation (“Uranerz”) (See Note 5). In addition, the ISR segment includes the Alta Mesa ISR Project (the “Alta Mesa Project”) located in Texas. The Alta Mesa Project is a fully-permitted and licensed production facility that is not currently operating. The Alta Mesa Project was acquired on June 16, 2016 (see Note 4).