Ur-Energy (URG) 10-K 26 Feb 16 2015 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Feb. 25, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Common Stock, Shares Outstanding		143,323,769
Entity Public Float			$ 84.2
Entity Registrant Name	UR-ENERGY INC
Entity Central Index Key	1,375,205
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents (note 4)	$ 1,443	$ 3,104
Accounts receivable	9	28
Inventory (note 5)	3,345	5,168
Prepaid expenses	916	856
Assets, Current, Total	5,713	9,156
Restricted cash (note 6)	7,557	7,556
Mineral properties (note 7)	50,610	52,750
Capital assets (note 8)	30,788	32,993
Equity investment (note 9)	1,089	1,090
Assets, Noncurrent, Total	90,044	94,389
Assets, Total	95,757	103,545
Current liabilities
Accounts payable and accrued liabilities (note 10)	4,567	4,532
Current portion of notes payable (note 11)	8,527	7,184
Accrued federal income tax	43
Environmental remediation accrual	86	85
Liabilities, Current, Total	13,223	11,801
Notes payable (note 11)	23,937	32,477
Deferred income tax liability (note 12)		3,345
Asset retirement obligations (note 13)	26,061	23,445
Other liabilities - warrants (note 14)	35	376
Liabilities, Noncurrent, Total	50,033	59,643
Liabilities	63,256	71,444
Share Capital
Common shares, without par value, unlimited shares authorized; shares issued and outstanding: 130,188,775 at December 31, 2015 and 129,365,076 at December 31, 2014	168,911	168,118
Warrants	4,175	4,175
Contributed surplus	14,632	14,250
Accumulated other comprehensive income	3,357	3,337
Deficit	(158,574)	(157,779)
Stockholders'Equity Attributable to Parent, Total	32,501	32,101
Liabilities and Equity, Total	$ 95,757	$ 103,545

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Class A preferred shares, shares issued	0	0
Class A preferred shares, shares outstanding	0	0
Common shares, without par value	$ 0	$ 0
Common shares, Shares issued	130,188,775	129,365,076
Common shares, Shares outstanding	130,188,775	129,365,076

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Sales (note 16)	$ 41,877	$ 29,349	$ 7,616
Cost of sales	(29,292)	(17,858)	(3,096)
Gross profit	12,585	11,491	4,520
Operating Expenses
Exploration and evaluation	(2,853)	(3,277)	(2,385)
Development	(5,358)	(7,672)	(18,465)
General and administrative	(5,715)	(6,541)	(5,592)
Accretion of asset retirement obligations (Note 13)	(515)	(497)	(27)
Write-off of investments			(1,006)
Write off of mineral property (Note 7)		(483)	(1,430)
Loss from operations	(1,856)	(6,979)	(24,385)
Interest expense (net)	(2,557)	(2,699)	(6,111)
Warrants mark to market adjustment (note 14)	307	946
Loss on equity investment (note 9)	(8)	(5)	(16)
Foreign exchange gain (loss)	(1)	(12)	164
Other income (loss)	5		(5)
Profit (loss) before income taxes	(4,110)	(8,749)	(30,353)
Income tax recovery (net) (note 12)	3,315
Net loss for the year	$ (795)	$ (8,749)	$ (30,353)
Loss per common share:
Basic and diluted	$ (0.01)	$ (0.07)	$ (0.25)
Weighted average number of common shares outstanding:
Basic and diluted	130,056,932	128,781,215	122,231,993
COMPREHENSIVE LOSS
Net loss for the year	$ (795)	$ (8,749)	$ (30,353)
Translation adjustment as of date of adoption of US$ as functional currency			(6,161)
Translation adjustment on foreign operations	20	39	(210)
Comprehensive loss for the year	$ (775)	$ (8,710)	$ (36,724)

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($)	Capital Stock	Warrants	Contributed Surplus	Accumulated Other Comprehensive Income	Deficit	Total
Beginning Balance at Dec. 31, 2012	$ 160,896,000	$ 61,000	$ 13,688,000	$ 9,669,000	$ (118,677,000)	$ 65,637,000
Beginning Balance (in shares) at Dec. 31, 2012	121,134,276
Exercise of stock options	$ 420,000		(145,000)			$ 275,000
Exercise of stock options (in shares)	377,927					377,927
Common shares issued for cash, net of issue costs	$ 3,396,000					$ 3,396,000
Common shares issued for cash, net of issue costs (in shares)	4,709,089
Adjustment to beginning balances due to change in functional currency				(6,161,000)		(6,161,000)
Redemption of vested RSUs	$ 499,000		(563,000)			(64,000)
Redemption of vested RSUs (in shares)	338,451
Issuance of warrants		4,228,000				4,228,000
Cancellation of warrants		(114,000)	114,000
Common shares issued for royalty interest	$ 763,000					763,000
Common shares issued for royalty interest (in shares)	1,000,000
Non-cash stock compensation			1,153,000			1,153,000
Net loss and comprehensive (loss) income				(210,000)	(30,353,000)	(30,563,000)
Ending Balance at Dec. 31, 2013	$ 165,974,000	4,175,000	14,247,000	3,298,000	(149,030,000)	38,664,000
Ending Balance (in shares) at Dec. 31, 2013	127,559,743
Exercise of stock options	$ 2,052,000		(705,000)			$ 1,347,000
Exercise of stock options (in shares)	1,623,139					1,623,139
Common shares issued for cash, net of issue costs	$ (50,000)					$ (50,000)
Redemption of vested RSUs	$ 142,000		(225,000)			(83,000)
Redemption of vested RSUs (in shares)	182,194
Other capital contributions			5,000			5,000
Non-cash stock compensation			928,000			928,000
Net loss and comprehensive (loss) income				39,000	(8,749,000)	(8,710,000)
Ending Balance at Dec. 31, 2014	$ 168,118,000	4,175,000	14,250,000	3,337,000	(157,779,000)	32,101,000
Ending Balance (in shares) at Dec. 31, 2014	129,365,076
Exercise of stock options	$ 626,000		(216,000)			$ 410,000
Exercise of stock options (in shares)	608,531					608,531
Common shares issued for cash, net of issue costs						$ 65
Redemption of vested RSUs	$ 167,000		(295,000)			(128,000)
Redemption of vested RSUs (in shares)	215,168
Non-cash stock compensation			893,000			893,000
Net loss and comprehensive (loss) income				20,000	(795,000)	(775,000)
Ending Balance at Dec. 31, 2015	$ 168,911,000	$ 4,175,000	$ 14,632,000	$ 3,357,000	$ (158,574,000)	$ 32,501,000
Ending Balance (in shares) at Dec. 31, 2015	130,188,775

Consolidated Statements of Cash

Consolidated Statements of Cash Flow - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash provided by (used in) Operating activities
Net loss for the year	$ (795)	$ (8,749)	$ (30,353)
Items not affecting cash:
Stock based expense	893	928	1,153
Depreciation and amortization	6,504	7,643	537
Non-cash interest expense			3,881
Accretion of asset retirement obligation	515	497	27
Amortization of deferred loan costs	177	7
Provision for reclamation	1		9
Write-off of investments			1,006
Write-off of mineral properties		483	1,430
Gain on foreign exchange			(156)
Warrants mark to market gain (loss)	(307)	(946)
Gain (loss) on disposition of assets	(5)		1
Other loss	8	3	18
Income tax recovery	(3,345)
RSUs redeemed for cash	(142)	(66)	(64)
Proceeds from assignment of sales contract		(2,508)	2,508
Change in non-cash working capital items:
Accounts receivable	19	5,772	(5,720)
Inventory	1,823	(3,115)	(1,433)
Prepaid expenses	125	252	(1,414)
Accounts payable and accrued liabilities	(131)	1,736	800
Accrued income taxes	30
Net Cash Provided by (Used in) Operating Activities, Total	$ 5,370	1,937	(27,770)
Investing activities
Mineral property costs		$ (65)	$ (5,319)
Purchase of short-term investments
Sale of short-term investments			$ 6,593
Increase in restricted cash	$ (1)	$ (2,500)	(3,001)
Funding of equity investment	(8)	(7)	(9)
Proceeds from sale of property and equipment	26
Purchase of capital assets	(77)	(436)	(23,990)
Net Cash Provided by (Used in) Investing Activities, Total	(60)	(3,008)	(25,726)
Financing activities
Issuance of common shares and warrants for cash			5,482
Share issue costs		(50)	(238)
Proceeds from exercise of stock options	410	1,347	275
Proceeds from debt financing		5,000	75,100
Cost of debt financing		(135)	(403)
Repayment of debt	(7,374)	(3,585)	(36,425)
Net Cash Provided by (Used in) Financing Activities, Total	(6,964)	2,577	43,791
Effects of foreign exchange rate changes on cash	(7)	(29)	(204)
Net change in cash and cash equivalents	(1,661)	1,477	(9,909)
Beginning cash and cash equivalents	3,104	1,627	11,536
Ending cash and cash equivalents	1,443	3,104	1,627
Total Interest paid	$ 2,385	$ 2,526	$ 3

Nature of Operations

Nature of Operations	12 Months Ended
	Dec. 31, 2015
Nature of Operations [Abstract]
Nature of operations	1. Nature of Operations Ur-Energy Inc. (the “Company”) was incorporated on March 22, 2004 under the laws of the Province of Ontario. The Company continued under the Canada Business Corporations Act on August 8, 2006. The Company is an exploration stage mining company, as defined by United States Securities and Exchange Commission (“SEC”) Industry Guide 7, headquartered in Littleton, Colorado. The Company is engaged in uranium mining and recovery operations, with activities including the acquisition, exploration, development and production of uranium mineral resources located primarily in Wyoming. As of August 2013 , the Company commenced uranium production at its Lost Creek Project in Wyoming. Due to the nature of the uranium mining methods used by the Company on the Lost Creek Property, and the definition of “mineral reserves” under National Instrument 43-101 (“NI 43-101”), which uses the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards, the Company has not determined whether the properties contain mineral reserves. However, the Company’s January 19, 2016 NI 43-101 Technical Report on Lost Creek, “ Preliminary Economic Assessment of the Lost Creek Property, Sweetwater County, Wyoming, ” as amended in non-substantive ways, February 8, 2016 ( “ Lost Creek PEA”) outlines the potential viability of the Lost Creek Property. The recoverability of amounts recorded for mineral properties is dependent upon the discovery of economic resources, the ability of the Company to obtain the necessary financing to develop the properties and upon attaining future profitable production from the properties or sufficient proceeds from disposition of the properties.

Liquidity Risk

Liquidity Risk	12 Months Ended
	Dec. 31, 2015
Liquidity Risk [Abstract]
Liquidity Risk	2. Liquidity Risk In February 2016 , the Company raised $5.9 million (net of costs of $600 thousand) from the private placement of 12.9 million shares priced at $0.50 per share. The rationale for raising funds was partially due to the timing of contracted deliveries and payment commitments in 2016. The Company has relied primarily on cash flow from operations since deliveries from production commenced on a regular basis in 2014. It is possible that additional funding might be sought. Although the Company has been successful in raising debt and equity financing in the past, there can be no guarantee that such funding will be available in the future.

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Cash and Cash Equivalents	4 . Cash and cash equivalents The Company’s cash and cash equivalents consists of the following: As of December 31, 2015 2014 $ $ Cash on deposit at banks Money market funds

Inventory

Inventory	12 Months Ended
	Dec. 31, 2015
Inventory [Abstract]
Inventory	5. Inventory The Company’s inventory consists of the following: As of December 31, 2015 2014 $ $ In-process inventory Plant inventory Conversion facility inventory As of December 31, 2015, there was no inventory carried at excess of net realizable value. The cost of inventory is recognized as an expense when sold and included in “cost of sales”.

Restricted Cash

Restricted Cash	12 Months Ended
	Dec. 31, 2015
Restricted Cash [Abstract]
Restricted cash	6. Restricted Cash The Company’s restricted cash consists of the following: As of December 31, 2015 2014 $ $ Money market account (a) Certificates of deposit (a) The bonding requirements for reclamation obligations on various properties have been agreed to by the Wyoming Department of Environmental Quality, United States Department of the Interior and United States Nuclear Regulatory Commission. The restricted money market accounts are pledged as collateral against performance surety bonds which are used to secure the potential costs of reclamation related to those properties. Surety bonds providing $ 27,881 of coverage towards specific reclamation obligations are collateralized by $7,444 of the restricted cash at December 31, 2015.

Mineral Properties

Mineral Properties	12 Months Ended
	Dec. 31, 2015
Mineral Properties [Abstract]
Mineral Properties	7. Mineral Properties The Company’s mineral properties consist of the following: Lost Creek Pathfinder Other US Canadian Property Mines Properties Properties Total $ $ $ $ $ Balance, December 31, 2013 Acquisition costs - - Change in estimated reclamation costs (Note 13) - - - Reporting exchange rate adjustment - - - Property write-offs - - - Amortization - - - Balance, December 31, 2014 - Change in estimated reclamation costs (Note 13) - - Amortization - - - Balance, December 31, 2015 - United States Lost Creek Property The Company acquired certain Wyoming properties when Ur-Energy USA Inc. entered into the Membership Interest Purchase Agreement (“MIPA”) with New Frontiers Uranium, LLC in 2005. Under the terms of the MIPA, the Company purchased 100% of NFU Wyoming, LLC. Assets acquired in this transaction include the Lost Creek Project, other Wyoming properties and development databases. NFU Wyoming, LLC was acquired for aggregate consideration of $20 million plus interest. Since 2005, the Company has increased its holdings adjacent to the initial Lost Creek acquisition through staking additional claims and additional property purchases and leases. In April 2013, the Company executed a royalty purchase agreement with the royalty holder who owned the only private royalty reserved on the Lost Creek Project. The 1.67% royalty had existed with respect to production of uranium on 20 mining claims at the Lost Creek Project. The Company issued one million common shares of the Company with a fair value of $763 in full consideration of the conveyance and termination of the royalty interest. There is a royalty on each of the State of Wyoming sections under lease at the Lost Creek, LC West and EN Projects, as required by law. Other royalties exist on certain mining claims at the LC South, LC East and EN Projects. There are no royalties on the mining claims in the LC North or LC West Projects. In September 2013, after the Company commenced mineral extraction and production at the Lost Creek Project, it began amortizing the related mineral properties on a straight-line basis. Pathfinder Mines Corporation The Company acquired additional Wyoming properties when Ur-Energy USA Inc. closed a Share Purchase Agreement (“SPA”) with an AREVA Mining affiliate in December 2013. Under the terms of the SPA, the Company purchased Pathfinder Mines Corporation (“Pathfinder”) to acquire additional mineral properties. Assets acquired in this transaction include the Shirley Basin mine, portions of the Lucky Mc mine, machinery and equipment, vehicles, office equipment and development databases. Pathfinder was acquired for aggregate consideration of $6.7 million, a 5% production royalty under certain circumstances and the assumption of $5.7 million in estimated asset reclamation obligations. The purchase price allocation attributed $5.7 million to asset retirement obligations, $3.3 million to deferred tax liabilities, $15.3 million to mineral properties and the balance to the remaining assets and liabilities. Other U.S. properties The other US properties includes the acquisition cost of several potential mineralized properties including the Lost Soldier Project. The Company continues to maintain those properties through claim payments, lease payments, insurance and other holding costs in anticipation of future exploration efforts. In January 2014, the Company decided to abandon the Mustang project in Nebraska. During 2014, the Company notified the leaseholders of the terminations when the lease renewals become due. The cost of that project of $1,168 was written off in 2013 as there was no value to the Company as of December 31, 2013. Canada The claims at Screech Lake and Bugs reached a point during 2014 where the Company needed to take the properties to lease (or make related notices) under the mining regulations and invest in additional exploration or release the claims. The Company elected not to pursue further exploration at these sites. As a result of those decisions, the Company also decided to permit the claims at Gravel Hill, which had been on regulatory suspension relief, to lapse. As a result, the claims were abandoned and the cost of the assets was written off. The holder of the Mountain Lake and Dismal Lake claims also abandoned their claims on those properties. As a result, the royalties the Company held on those properties also became worthless and were written off in 2014.

Capital Assets

Capital Assets	12 Months Ended
	Dec. 31, 2015
Capital Assets
Capital Assets	8. Capital Assets The Company’s capital assets consist of the following: As of As of December 31, 2015 December 31, 2014 Accumulated Net Book Accumulated Net Book Cost Depreciation Value Cost Depreciation Value $ $ $ $ $ $ Rolling stock Enclosures Machinery and equipment Furniture, fixtures and leasehold improvements Information technology In August 2013, the Company received permission from the NRC to begin production at the Lost Creek facility. At that time, the Company reclassified its construction in progress assets to enclosures as well as machinery and equipment. Total depreciation expense was $ 6.5 million, $7.6 million and $0.5 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Equity Investment

Equity Investment	12 Months Ended
	Dec. 31, 2015
Equity Investment [Abstract]
Equity Investment	9. Equity Investment Following its earn-in to The Bootheel Project, LLC in 2009, Jet Metals Corp, was required to fund 75% of the project’s expenditures and the Company the remaining 25% . The project has been accounted for using the equity accounting method with the Company’s proportionate share of the project’s loss included in the Consolidated Statement of Operations since the date of earn-in and the Company’s net investment is reflected on the Consolidated Balance Sheet. Under the terms of the agreement, the Company elected not to participate financially for the project’s financial year ended March 31, 2012 which reduced the Company’s ownership percentage to 19.1% . The equity accounting method has been continued because the Company has an equal number of members on the management committee as the other member and can directly influence the budget, expenditures and operations of the project. At December 31, 2015, the Company performed an impairment analysis based on the mineralization at the Bootheel property and the current spot price. It determined that no impairment was warranted.

Accounts Payable and Accrued Li

Accounts Payable and Accrued Liabilities	12 Months Ended
	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Accounts Payable and Accrued Liabilities	10. Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities consist of the following: As of December 31, 2015 2014 $ $ Accounts payable Severance and ad valorem tax payable Payroll and other taxes

Notes Payable

Notes Payable	12 Months Ended
	Dec. 31, 2015
Notes Payable [Abstract]
Notes Payable	11. Notes Payable On October 15, 2013 , the Sweetwater County Commissioners approved the issuance of a $34.0 million Sweetwater County, State of Wyoming, Taxable Industrial Development Revenue Bond (Lost Creek Project), Series 2013 (the “Sweetwater IDR Bond”) to the State of Wyoming, acting by and through the Wyoming State Treasurer, as purchaser. On October 23, 2013 , the Sweetwater IDR Bond was issued and the proceeds were in turn loaned by Sweetwater County to Lost Creek ISR, LLC pursuant to a financing agreement dated October 23, 2013 (the “State Bond Loan”). The State Bond Loan calls for payments of interest at a fixed rate of 5.75% per annum on a quarterly basis commencing January 1, 2014. The principal is payable in 28 quarterly installments commencing January 1, 2015 and continuing through October 1, 2021 . The State Bond Loan is collateralized by all of the assets at the Lost Creek Project. As a condition of the financing, earlier loan facilities with RMB Australia Holding Ltd (“RMB”) together with certain construction equipment loans were paid off with the funding proceeds from the State Bond Loan. On June 24, 2013 , the Company entered into a $20.0 million First Loan Facility with RMB. The initial $20.0 million was drawn and repaid during 2013. An amendment to the First Loan Facility allowed for $5.0 million to be redrawn. This was done on December 19, 2013 for the acquisition of Pathfinder. On March 14, 2014, the loan was amended to change the interest rate, extend the loan maturity date to March 31, 2016 and increase the current loan to $10.0 million which included a line of credit of $3.5 million following the completion and results of a Technical Report (NI 43-101) on the newly acquired Shirley Basin Project. On March 14, 2014, the Company also drew down an additional $1.5 million on its First Loan Facility. On September 19, 2014, the Company drew down the $3.5 million line of credit. The amended interest rate is approximately 8.75% . Principal payments of $0.81 million are due quarterly. On October 15, 2015, the loan was again amended to extend the maturity date of the $3.5 million line of credit to December 31, 2016 and spread the $3.5 million balance originally due March 31, 2016 over four quarterly payments commencing March 31, 2016 and concluding December 31, 2016 , plus interest under the same terms. This was considered a modification for accounting purposes. Deferred loan fees include legal fees, commissions, commitment fees and other costs associated with obtaining the various financings. Those fees amortizable within 12 months of September 30, 2015 are considered current. The current and long-term deferred loan fees have been offset against the related liabilities in accordance with recently approved ASU 2015-03 which we have elected to adopt early in these financial statements (see note 3). Interest expense in 2013 includes a loss of $5.7 million from the early extinguishment by the State Bond Loan of the earlier RMB loan facilities due to the write-off of unamortized deferred financing costs. The following table lists the current and long term portion of each of the Company’s debt instruments at December 31, 2015 and December 31, 2014: As at As at December 31, 2015 December 31, 2014 Current debt Sweetwater County Loan RMB First Loan Facility Less deferred financing costs Long term debt Sweetwater County Loan RMB First Loan Facility - Less deferred financing costs Schedule of payments on outstanding debt as of December 31, 2015: Debt Total 2016 2017 2018 2019 2020 Subsequent Maturity Sweetwater County Loan Principal October 1, 2021 Interest RMB First Loan Facility Principal - - - - - December 31, 2016 Interest - - - - - Total

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Taxes
Income taxes	12. Income Taxes A reconciliation of income taxes at the statutory Canadian income tax rate to net income taxes included in the accompanying statements of operations is as follows: Year ended December 31, 2015 2014 2013 $ $ $ Loss before income taxes Statutory rate Expected recovery of income tax Effect of foreign tax rate differences Non-deductible amounts Effect of changes in enacted future rates Effect of change in foreign exchange rates Effect of stock based compensation - - Change in valuation allowance - - Recovery of deferred income taxes - - - - Deferred tax assets and liabilities reflect the net tax effects of net operating losses, credit carryforwards and temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and amounts used for income tax purposes. The components of the Company’s deferred tax assets and liabilities are as follows: As at December 31, 2015 2014 2013 $ $ $ Future income tax assets Deferred tax assets Net operating loss carry forwards Less: valuation allowance - - - Future income tax liabilities Mineral properties - Net deferred tax liability - Based upon the level of historical taxable loss, management believes it is more likely than not that the Company will not realize the benefits of these deductible differences and accordingly has established a full valuation allowance as of December 31, 2015 and 2014. No deferred tax assets are therefore recognized at this point. Income tax recovery (expense) 2015 2014 2013 $ $ $ Recovery of deferred tax liability stemming from Pathfinder acquisition - - Current income tax expense - - - - In 2013, we acquired Pathfinder as a corporate entity. In terms for the acquisition, there were no net operating losses or other tax attributes that carried forward to the Company with the acquisition. In addition, the assets acquired had no tax basis within the corporation. The seller also did not make the Sec. 338(h)(10) election to allow us to push the purchase price down to the asset level for tax purposes. As a result, it was determined that the acquisition should not treated as a business combination since Pathfinder was not a going concern. A tax of $3.3 million was calculated as a potential liability of the acquisition and was recorded as a deferred tax liability and an increase in basis. For accounting/reporting purposes, this value was added to the accounting basis in the assets acquired. In addition, it was determined for the 2013 financials that the deferred tax liability (“DTL”) should not be netted with the company’s other deferred tax assets (“DTA”) and offset with the valuation allowance (“VA”) because at the time it could not be determined if the losses in Ur-Energy could safely be applied to reduce the Pathfinder DTL and the amount was determined to be indefinite lived. In early 2015, we completed and filed the Shirley Basin PEA based on drilling data purchased as a part of the acquisition combined with gathered during the exploration / confirmation program undertaken in 2014. After filing the Shirley Basin PEA, we have continued to do baseline and confirmation work at Shirley Basin and in late 2015 we submitted a permit application to the state of Wyoming to begin construction and operations at the project. In early 2016, we anticipating filing the federal permit application with the Nuclear Regulatory Commission. The current income tax accrual and related expense is due to federal alternative minimum tax which limits the amount of net operating loss . As of December 31, 2015, the Company had the following net operating loss carryforwards available: Income tax loss carry forwards Canadian (expiring 2016 - 2036) $ United States (expiring 2025 - 2035) $ The Company follows a comprehensive model for recognizing, measuring, presenting and disclosing uncertain tax positions taken or expected to be taken on a tax return. Tax positions must initially be recognized in the financial statements when it is more likely than not the position will be sustained upon examination by the tax authorities. Such tax positions must initially and subsequently be measured as the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority assuming full knowledge of the position and relevant facts. The Company currently has no uncertain tax positions and is therefore not reflecting any adjustments for such in its deferred tax assets. There are open statutes of limitations for tax authorities in the U.S., Canada and state jurisdictions to audit the Company’s tax returns for the years ended December 31, 2012, 2013 and 2014. The Company’s policy is to account for income tax related interest and penalties in income tax expense in the accompanying statements of operations. There have been no income tax related interest or penalties assessed or recorded. Other comprehensive loss was not subject to income tax effects and is therefore shown net of taxes.

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2015
Asset Retirement Obligations [Abstract]
Asset Retirement and Reclamation Obligations	13. Asset Retirement Obligations Asset retirement obligations ("ARO") for the Lost Creek Project are equal to the present value of all estimated future costs required to remediate any environmental disturbances that exist as of the end of the period, using discount rates ranging from 0.1% to 3.2% . I ncluded in this liability are the costs of closure, reclamation, demolition and stabilization of the mine, processing plant, infrastructure, aquifer restoration, waste dumps and ongoing post-closure environmental monitoring and maintenance costs. At December 31, 2015, the total undiscounted amount of the future cash needs was estimated to be $ 14.6 million. The schedule of payments required to settle the ARO liability extends through 2033. Asset retirement obligations for the Pathfinder properties are equal to the present value of all estimated future costs required to remediate any environmental disturbances that exist as of the end of the period, using discount rates of 2.16% to 3.0% . I ncluded in this liability are the costs of closure, reclamation, demolition and stabilization of the mines, processing plants, infrastructure, aquifer restoration, waste dumps and ongoing post-closure environmental monitoring and maintenance costs. At December 31, 2015, the total undiscounted amount of the future cash needs was estimated to be $12.4 million. The schedule of payments required to settle the ARO liability extends through 2033. The undiscounted future cash needs are based on information provided to the State of Wyoming in conjunction with annual reclamation bonding renewals. Increases in the estimated future cash needs are normally based on increased disturbances projected for the upcoming year. In 2015, there was a small increase in the estimated liability on the Lost Creek Project. In 2014, the Company submitted their initial report to the state since acquiring the Pathfinder properties. The total estimated liability was significantly greater than what had been reflected on the Pathfinder financial statements at of the date of the acquisition in 2013. As a result, the estimated liability was revised in 2014 to reflect the estimates calculated by Company personnel. The restricted cash as discussed in note 6 is related to surety bonds and letters of credit which provide security to the related governmental agencies on these obligations. Year ended Year ended December 31, 2015 December 31, 2014 $ $ Beginning of period Change in estimated liability Accretion expense End of period

Other Liabilities

Other Liabilities	12 Months Ended
	Dec. 31, 2015
Other Liabilities [Abstract]
Other Liabilities	14. Other Liabilities The Company completed a private placement in December 2013. In connection with this, the Company issued units consisting of one common share and one half warrants. The warrants are priced at US$ 1.35 which created a non-hedging derivative financial instrument. The liability created is adjusted to a calculated fair value quarterly using the Black-Scholes technique described in note 15 as there is no active market for the warrants. Any income or loss is reflected in net income for the year. The revaluation resulted in a gain of $307 and $946 for the years ended December 31, 2015 and 2014, respectively.

Shareholders' Equity and Capita

Shareholders' Equity and Capital Stock	12 Months Ended
	Dec. 31, 2015
Shareholders' Equity and Capital Stock [Abstract]
Shareholders' Equity and Capital Stock	15. Shareholders’ Equity and Capital Stock Common share issuances During the year ended December 31, 2015, the Company exchanged 215,168 common shares for vested Restricted Share Units (“RSUs”). In addition, 608,531 stock options were exercised for proceeds of $0.4 million. During the year ended December 31, 2014, the Company exchanged 182,194 common shares for vested RSUs. In addition, 1,623,139 stock options were exercised for proceeds of $1.3 million. During the year ended December 31, 2013, the Company exchanged 338,451 common shares for vested RSUs. In addition, 377,927 stock options were exercised for proceeds of $0.3 million. On December 19, 2013, the Company completed a private placement of 4,709,089 units consisting of one share of common stock and one half warrant at $1.10 per unit raising gross proceeds of $5.1 million. Total direct share issue costs, including the placement agents’ commission, were $0.2 million. Stock options In 2005, the Company’s Board of Directors approved the adoption of the Company's stock option plan (the “Option Plan”). Eligible participants under the Option Plan include directors, officers, employees and consultants of the Company. Under the terms of the Option Plan, stock options generally vest with Option Plan participants as follows: 10% at the date of grant; 22% four and one-half months after grant; 22% nine months after grant; 22% thirteen and one-half months after grant; and the balance of 24% eighteen months after the date of grant. Activity with respect to stock options is summarized as follows: Weighted- Options average # exercise price US$ Outstanding, December 31, 2012 Granted Exercised Forfeited Expired Outstanding, December 31, 2013 Granted Exercised Forfeited Expired Outstanding, December 31, 2014 Granted Exercised Forfeited Expired Outstanding, December 31, 2015 The exercise price of a new grant is set at the closing price for the stock on the Toronto Stock Exchange (TSX) on the trading day immediately preceding the grant date so there is no intrinsic value as of the date of grant. The fair value of options vested during the year ended December 31, 2015 was $ 0.6 million. As of December 31, 2015, outstanding stock options are as follows: Options outstanding Options exercisable Weighted- Weighted- average Aggregate average Aggregate Exercise remaining Intrinsic remaining Intrinsic price Number contractual Value Number contractual Value US$ of options life (years) US$ of options life (years) US$ Expiry (thousands) (thousands) 2.07 0.1 - 0.1 - January 28, 2016 1.13 0.5 - 0.5 - July 7, 2016 0.85 0.7 - 0.7 - September 9, 2016 0.84 0.8 - 0.8 - October 24, 2016 0.66 1.0 - 1.0 - January 12, 2017 1.00 1.1 - 1.1 - February 1, 2017 0.85 1.2 - 1.2 - March 1, 2017 0.55 1.9 1.9 December 7, 2017 0.56 2.3 2.3 April 25, 2018 0.90 2.6 - 2.6 - August 1, 2018 0.87 3.0 - 3.0 - December 27, 2018 1.21 3.2 - 3.2 - March 31, 2019 0.74 3.9 - 3.9 - December 12, 2019 0.82 4.4 - 4.4 - May 29, 2020 0.62 4.6 4.6 August 17, 2020 0.58 4.9 4.9 December 11, 2020 0.88 2.4 1.7 The aggregate intrinsic value of the options in the preceding table represents the total pre-tax intrinsic value for stock options with an exercise price less than the Company’s TSX closing stock price of Cdn $0.89 as of the last trading day in the year ended December 31, 2015, that would have been received by the option holders had they exercised their options as of that date. The total number of in-the-money stock options outstanding as of December 31, 2015 was 3,968,617 . The total number of in-the-money stock options exercisable as of December 31, 2015 was 2,021,028 . Restricted share units On June 24, 2010, the Company’s shareholders approved the adoption of the Company’s restricted share unit plan (the “RSU Plan”). The plan was approved most recently on April 29, 2013, and amendments to the plan were approved by the shareholders on May 28, 2015 . Eligible participants under the RSU Plan include directors and employees, including officers, of the Company. Under the terms of the RSU Plan, RSUs vested with participants as follows: 50% on the first anniversary of the date of the grant and 50% on the second anniversary of the date of the grant. In March 2015, the Board approved amendments to the plan that (a) extend the redemption period so that, going forward, all RSUs vest 100% on the second anniversary of the date of the grant; (b) provide for redemption, instead of cancellation, of outstanding RSUs at the date of redemption for retiring directors and executive officers, which is defined as a threshold of combined service and age of 65 years, and a minimum of five years of service to the Company; and (c) update the RSU Plan for compliance with applicable laws. The amendments were approved and ratified by shareholder vote on May 28, 2015. Activity with respect to RSUs is summarized as follows: Number Weighted of average grant RSUs date fair value US$ Unvested, December 31, 2012 Granted Vested Forfeited Unvested, December 31, 2013 Granted Vested Forfeited Unvested, December 31, 2014 Granted Vested Forfeited Unvested, December 31, 2015 As of December 31, 2015, outstanding RSUs are as follows: Aggregate Number of Remaining Intrinsic unvested life Value Grant date RSUs (years) US$ (thousands) December 12, 2014 0.95 March 13, 2015 1.20 August 17, 2015 1.63 December 11, 2015 1.95 1.33 As of December 31, 2015, 212,803 RSUs had been vested but not redeemed. In January 2016, 197,374 were redeemed for common shares while the balance of 15,429 were retained and not redeemed to pay the related taxes due on redemption. As of December 31, 2014, 280,529 RSUs had been vested but not redeemed. In January 2015, 215,168 were redeemed for common shares while the balance of 65,361 were retained and not redeemed to pay the related taxes due on redemption. Upon RSU vesting, the holder of an RSU will receive one common share, for no additional consideration, for each RSU held. Warrants On December 19, 2013, the Company issued 2,354,545 warrants to purchase stock at $1.35 per share in connection with the sale of private placement units (see note 14). The balance of the warrants were issued in Canadian dollars and have been converted to their US$ equivalent for presentation purposes. The First Loan Facility accounts for the remainder of the warrants issued during 2013 (see note 11). Activity with respect to warrants is summarized as follows: Number Weighted- of average Warrants exercise price US$ Outstanding, December 31, 2012 Granted Cancelled Outstanding, December 31, 2013 Outstanding, December 31, 2014 Expired Outstanding, December 31, 2015 As of December 31, 2015, outstanding warrants are as follows: Aggregate Exercise Remaining Intrinsic price Number contractual Value US$ of warrants life (years) US$ Expiry (thousands) 0.93 0.2 - March 5, 2016 1.35 1.0 - December 19, 2016 1.12 2.5 - June 24, 2018 1.17 2.7 - August 27, 2018 1.00 2.1 - Share-based compensation expense Stock-based compensation expense was $0.9 million, $ 0.9 million and $ 1.2 million for the years ended December 31, 2015, 2014 and 2013, respectively. As of December 31, 2015, there was approximately $0.7 million of total unrecognized compensation expense (net of estimated pre-vesting forfeitures) related to unvested share-based compensation arrangements granted under the Option Plan and $0.6 million under the RSU Plan. The expenses are expected to be recognized over a weighted-average period of 1.2 years and 1.5 years, respectively. Cash received from stock options exercised during the years ended December 31, 2015, 2014 and 2013 was $0.4 million, $1.3 million and $0.3 million, respectively. Fair Value Calculations The initial fair value of RSUs, options and warrants granted during the years ended December 31, 2015, 2014 and 2013 was determined using the Black-Scholes option pricing model with the following assumptions : 2015 2014 2013 Expected option life (years) 3.6 - 3.67 3.49 - 3.56 3.41 - 3.51 Expected volatility 55 - 57 % 61 - 66 % 61 - 66 % Risk-free interest rate 0.5 - 0.7 % 1.1 - 1.4 % 0.9 - 1.4 % Forfeiture rate (options) 4.9-5.0% 4.5-4.7% 4.2-4.4% Forfeiture rate (RSUs) 7.2-8.3% 7.7% 12.5-22.3% Expected dividend rate 0% 0% 0% The Company estimates expected volatility using daily historical trading data of the Company’s common shares, because this is recognized as a valid method used to predict future volatility. The risk-free interest rates are determined by reference to Canadian Treasury Note constant maturities that approximate the expected option term. The Company has never paid dividends and currently has no plans to do so. Share-based compensation expense is recognized net of estimated pre-vesting forfeitures, which results in recognition of expense on options that are ultimately expected to vest over the expected option term. Forfeitures were estimated using actual historical forfeiture experience. The fair value used for the RSUs issued in 2015 ranged from CAD $0.80 to CAD $1.22 while the RSUs issued in December 2014 and December 2013 were $0.96 and $1.20 per unit, respectively which was the closing price of the stock on the TSX as of the trading days immediately preceding the grant dates.

Sales

Sales	12 Months Ended
	Dec. 31, 2015
Revenue [Abstract]
Sales	16. Sales Revenue is primarily derived from the sale of U 3 O 8 to domestic utilities under contracts or spot sales. In 2013, the Company also sold its 2013 and 2014 deliveries under two of its contracts to a third party trader. The income was recognized in the years in which the respective deliveries were completed. Revenue consists of: Year ended December 31, 2015 2014 $ $ Sale of produced inventory Company A - Company B Company C Company D Sales of purchased inventory Company E - Total sales of inventory Disposal fee income Recognition of gain from sale of deliveries under assignment -

Financial instruments

Financial instruments	12 Months Ended
	Dec. 31, 2015
Financial instruments [Abstract]
Financial instruments	17. Financial instruments The Company’s financial instruments consist of cash and cash equivalents, accounts receivable, restricted cash, deposits, accounts payable and accrued liabilities and notes payable. The Company is exposed to risks related to changes in foreign currency exchange rates, interest rates and management of cash and cash equivalents and short-term investments Credit risk Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash and cash equivalents and restricted cash. These assets include Canadian dollar and U.S. dollar denominated certificates of deposits, money market accounts and demand deposits. They bear interest at annual rates ranging from 0.18% to 0.4% and mature at various dates up to February 5, 2017 . These instruments are maintained at financial institutions in Canada and the United States. Of the amount held on deposit, approximately $0.5 million is covered by the Canada Deposit Insurance Corporation, the Securities Investor Protection Corporation or the United States Federal Deposit Insurance Corporation, leaving approximately $8.5 million at risk at December 31, 2015 should the financial institutions with which these amounts are invested be rendered insolvent. The Company does not consider any of its financial assets to be impaired as of December 31, 2015. Liquidity risk Liquidity risk is the risk that the Company will not be able to meet its financial obligations as they come due. The Company has financed its operations from its inception primarily through the issuance of equity securities and debt instruments. Production commenced in August 2013 after receiving final operational clearance from the NRC. Product sales commenced in December 2013. As at December 31, 2015, the Company’s financial liabilities consisted of trade accounts payable and accrued trade and payroll liabilities of $1.8 million which are due within normal trade terms of generally 30 to 60 days, notes payable which will be payable over periods of 0 to 7 years, and asset retirement obligations with estimated completion dates until 2033. Market risk Market risk is the risk to the Company of adverse financial impacts due to changes in the fair value or future cash flows of financial instruments as a result of fluctuations in interest rates and foreign currency exchange rates. Interest rate risk Financial instruments that expose the Company to interest rate risk are its cash equivalents, deposits, restricted cash and debt financings. The Company’s objectives for managing its cash and cash equivalents are to maintain sufficient funds on hand at all times to meet day to day requirements and to place any amounts considered in excess of day to day requirements on short-term deposit with the Company's financial institutions so that they earn interest. Currency risk The Company maintains a balance of less than $0.1 million in foreign currency resulting in a low currency risk. Sensitivity analysis T he Company has completed a sensitivity analysis to estimate the impact that a change in interest rates would have on the net loss of the Company. This sensitivity analysis shows that a change of +/- 100 basis points in interest rate would have a $0.6 million impact for the year ended December 31, 2015. The financial position of the Company may vary at the time that a change in interest rates occurs causing the impact on the Company’s results to differ from that shown above.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2015
Commitments [Abstract]
Commitments	18. Commitments Under the terms of its operating lease for vehicles and the office premises in Casper, Wyoming, the Company is committed to minimum annual lease payments as follows: Year ended December 31, $ 2016 2017 2018 2019 and thereafter - Rent expense under these agreements was $0.2 million, $0.2 million and $0.2 million for the years ended December 31, 2015, 2014 and 2013, respectively. Principal payments required under debt agreements are as follows: Year ended: December 31, 2016 December 31, 2017 December 31, 2018 December 31, 2019 December 31, 2020 Future years Off Take Sales Agreements As of December 31, 2015, we have ten off take sales agreements with various U.S. utilities. These agreements were completed between 2012 and 2015 for deliveries between 2016 and 2021 as follows: SUMMARY OF OFF TAKE SALES AGREEMENTS Production Year Total Pounds Uranium Concentrates Contractually Committed 2016 662,000 pounds 2017 600,000 pounds 2018 500,000 pounds 2019 600,000 pounds 2020 450,000 pounds 2021 250,000 pounds

Other items not affecting cash

Other items not affecting cash flow	12 Months Ended
	Dec. 31, 2015
Noncash Investing and Financing Items [Abstract]
Other Items Not Affecting Cash Flow	19. Other items not affecting cash flow Year ended December 31, 2015 2014 2013 $ $ $ Non-cash financing and investing activities: Common shares issued for properties — —

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2015
Subsequent Events [Abstract]
Subsequent events	20 . Subsequent events In February 2016, the Company raised $5.9 million (net of costs of $600 thousand) from the bought deal financing of 12.9 million shares priced at $0.50 per share.

Summary of Significant Accounti

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Summary of Significant Accounting Policies [Abstract]
Basis of presentation	Basis of presentation These financial statements have been prepared by management in accordance with United States generally accepted accounting principles (“US GAAP”) and include all of the assets, liabilities and expenses of the Company and its wholly-owned subsidiaries Ur-Energy USA Inc.; NFU Wyoming, LLC; Lost Creek ISR, LLC; NFUR Bootheel, LLC; Hauber Project LLC; NFUR Hauber, LLC; and Pathfinder Mines Corporation. All inter-company balances and transactions have been eliminated upon consolidation. Ur-Energy Inc. and its wholly-owned subsidiaries are collectively referred to herein as the “Company.”
Exploration Stage	Exploration Stage The Company has established the existence of uranium resources for certain uranium projects, including the Lost Creek Property. The Company has not established proven or probable reserves, as defined by SEC under Industry Guide 7, through the completion of a final or “bankable” feasibility study for any of its uranium projects, including the Lost Creek Property. Furthermore, the Company has no plans to establish proven or probable reserves for any of its uranium projects for which the Company plans on utilizing in-situ recovery (“ISR”) mining, such as the Lost Creek Property or the Shirley Basin Project. As a result, and despite the fact that the Company commenced recovery of uranium at the Lost Creek Project in August 2013 , the Company remains in the Exploration Stage as defined under Industry Guide 7, and will continue to remain in the Exploration Stage until such time proven or probable reserves have been established. Since the Company commenced recovery of uranium at the Lost Creek Project without having established proven and probable reserves, any uranium resources established or extracted from the Lost Creek Project should not be in any way associated with having established, or production from, proven or probable reserves. Accordingly, information concerning mineral deposits set forth herein may not be comparable to information made public by companies that have reserves in accordance with United States standards.
Use of estimates	Use of estimates The preparation of consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The most significant estimates management makes in the preparation of these consolidated financial statements relate to potential impairment in the carrying value of the C ompany’s long-lived assets due to declining uranium prices or other internal or external factors, the fair value of stock-based compensation using the factors associated with the Black-Scholes calculations , estimation of the amount of recoverable uranium included in the in-process inventory, estimation of factors surrounding asset retirement obligations such as interest rates, discount rates and inflation rates, total cost and the time until the asset retirement commences and the recovery of income taxes. Actual r esults could differ from those estimates.
Restricted cash	Restricted cash Cash which is restricted contractually or which secures various instruments including surety bonds and letters of credit securing reclamation obligations is shown as restricted cash.
Inventory	Inventory In-process inventory represents uranium that has been extracted from the wellfield and captured in the processing plant and is currently being transformed into a saleable product. Plant inventory is U 3 O 8 that is contained in yellowcake, which has been dried and packaged in drums, but not yet shipped to the conversion facility. The amount of U 3 O 8 in the plant inventory is determined by weighing and assaying the amount of U 3 O 8 packaged into drums at the plant. Conversion facility inventory is U 3 O 8 that has been shipped to the conversion facility. The amount of U 3 O 8 in the conversion facility inventory includes the amount of U 3 O 8 contained in drums shipped to the conversion facility plus or minus any final weighing and assay adjustments per the terms of the uranium supplier’s agreement with the conversion facility. The Company’s inventories are measured at the lower of cost or net realizable value and reflect the U 3 O 8 content in various stages of the production and sales process including in-process inventory, plant inventory and conversion facility inventory. Operating supplies are expensed when purchased.
Mineral properties	Mineral properties Acquisition costs of mineral properties are capitalized. When production is attained, amortization is calculated on a straight-line basis. The original estimated life for the Lost Creek and Lost Creek Easts project was 10 years which is being used to amortize the mineral property acquisition costs. If properties are abandoned or sold, they are written off. If properties are considered to be impaired in value, the costs of the properties are written down to their estimated fair value at that time.
Exploration, evaluation and development costs	Exploration, evaluation and development costs Exploration and evaluation expenses consist of labor, annual exploration lease and maintenance fees and associated costs of the exploration geology department as well as exploration costs including drilling and analysis on properties which have not reached the permitting or operations stage. Development expense relates to the Company’s Lost Creek, LC East and Shirley Basin projects, which are more advanced in terms of permitting and preliminary economic assessments. Development expenses include all costs associated with exploring, delineating and permitting within those projects, the costs associated with the construction and development of permitted mine units including wells, pumps, piping, header houses, roads and other infrastructure related to the preparation of a mine unit to begin extraction operations as well as the cost of drilling and completing disposal wells.
Capital assets	Capital assets Property, plant and equipment assets, including machinery, processing equipment, enclosures, vehicles and expenditures that extend the life of such assets, are recorded at cost including acquisition and installation costs. The enclosure costs include both the building housing and the processing equipment necessary for the extraction of uranium from impregnated water pumped in from the wellfield to the packaging of uranium yellowcake for delivery into sales. These enclosure costs are combined as the equipment and related installation associated with the equipment is an integral part of the structure itself. The costs of self-constructed assets include direct construction costs, direct overhead and allocated interest during the construction phase. Depreciation is calculated using a declining balance method for most assets with the exception of the plant enclosure and related equipment. Depreciation on the plant enclosure and related equipment is calculated on a straight-line basis. Estimated lives for depreciation purposes range from three years for computer equipment and software to 20 years for the plant enclosure and the name plate life of the related equipment.
Equity investments	Equity investments Investments in which the Company has a significant influence are accounted for using the equity method, whereby the Company records its proportionate share of the investee’s income or loss.
Impairment of long-lived assets	Impairment of long-lived assets The Company assesses the possibility of impairment in the net carrying value of its long-lived assets when events or circumstances indicate that the carrying amounts of the asset or asset group may not be recoverable. When potential impairment is indicated, management calculates the estimated undiscounted future net cash flows relating to the asset or asset group using estimated future prices, recoverable resources, and operating, capital and reclamation costs. When the carrying value of an asset exceeds the related undiscounted cash flows, the asset is written down to its estimated fair value, which is determined using discounted future cash flows or other measures of fair value.
Asset retirement obligation	Asset retirement obligations For mining properties, various federal and state mining laws and regulations require the Company to reclaim the surface areas and restore underground water quality to the pre-existing quality or class of use after the completion of mining. The Company records the fair value of an asset retirement obligation as a liability in the period in which it incurs an obligation associated with the retirement of tangible long-lived assets that result from the acquisition, construction, development and/or normal use of the assets. Asset retirement obligations consist of estimated final well closures, plant closure and removal and associated ground reclamation costs to be incurred by the Company in the future. The estimated fair value of the asset retirement obligation is based on the current cost escalated at an inflation rate and discounted at a credit adjusted risk-free rate. This liability is capitalized as part of the cost of the related asset and amortized over its useful life. The liability accretes until the Company settles the obligation.
Revenue recognition	Revenue recognition The recognition of revenue from the sale of U 3 O 8 is in accordance with the guidelines outlined in ASC Section 605-10-25, Revenue Recognition. The Company delivers U 3 O 8 to a conversion facility and receives credit for the delivery quantity, measured in pounds, less a reserve for variances in the quality of the product delivered. Once the product is assayed, the credit is adjusted to the full amount calculated. When a delivery is approved, the Company notifies the conversion facility with instructions for a title transfer to the customer. Revenue is recognized once a title transfer of the U 3 O 8 is confirmed by the conversion facility. In 2013, the Company sold two years of delivery commitments to an independent trader . The proceeds were recorded as deferred revenue until the trader or purchaser acknowledged the deliveries had been made, at which time the portion of the sale relating to those deliveries were taken into sales revenue. The final delivery was made, and the related revenue recognized, in 2014.
Stock-based compensation	Stock-based compensation All stock-based compensation payments made to employees, directors and consultants are accounted for in the consolidated financial statements. Stock-based compensation cost is measured at the grant date based on the fair value of the reward and is recognized over the related service period. Stock-based compensation cost is charged to construction, exploration and evaluation, development, and general and administrative expense on the same basis as other compensation costs.
Income taxes	Income taxes The Company accounts for income taxes under the asset and liability method which requires the recognition of future income tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and tax bases of assets and liabilities. The Company provides a valuation allowance on future tax assets unless it is more likely than not that such assets will be realized. The Company recognized an income tax recovery when it determined that is was more likely than not that they would be able to include Pathfinder as an operating property and be able to offset the estimated deferred tax liability created at acquisition with a portion of the deferred tax assets which have been subject to the valuation allowance.
Loss per common share	Loss per common share Basic loss per common share is calculated based upon the weighted average number of common shares outstanding during the period. The diluted loss per common share, which is calculated using the treasury stock method, is equal to the basic loss per common share due to the anti-dilutive effect of stock options, restricted share units and share purchase warrants outstanding. Classification of financial instruments The Company’s financial instruments consist of cash, short-term investments, accounts receivable, restricted cash, deposits, accounts payable and accrued liabilities, other liabilities and notes payable. The Company has made the following classifications for these financial instruments: · Cash, accounts receivable, restricted cash and deposits are recorded at amortized cost. Interest income is recorded using the effective interest rate method and is included in income for the period. · Accounts payable and accrued liabilities and notes payable are measured at amortized cost. · Other liabilities, which relate to the derivative on the warrant issued in U.S. dollars, are adjusted to the market value at the end of each reporting period.
Classification of financial instruments	Classification of financial instruments The Company’s financial instruments consist of cash, short-term investments, accounts receivable, restricted cash, deposits, accounts payable and accrued liabilities, other liabilities and notes payable. The Company has made the following classifications for these financial instruments: · Cash, accounts receivable, restricted cash and deposits are recorded at amortized cost. Interest income is recorded using the effective interest rate method and is included in income for the period. · Accounts payable and accrued liabilities and notes payable are measured at amortized cost. · Other liabilities, which relate to the derivative on the warrant issued in U.S. dollars, are adjusted to the market value at the end of each reporting period.
New accounting pronouncements	New accounting pronouncements In April 2015 , the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU” ) 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The update requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the related debt liability instead of being presented as an asset. Debt disclosures will include the face amount of the debt liability and the effective interest rate. The update requires retrospective application and represents a change in accounting principle. The update is effective for fiscal periods beginning after December 15, 2015 . Early adoption is permitted for financial statements that have not been previously issued. We elected early adoption of this standard effective the second quarter of 2015. The impact on the current statements is to move $ 190 of current deferred cost to offset the current portion of long-term debt and $ 716 of non-current deferred loan costs to offset non-current notes payable. See note 11. In May 2014, the FASB issued ASU 2014-09, “ Revenue from Contracts with Customers (Topic 606) ”. The amendments in ASU 2014-09 affect any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards ( e.g., insurance contracts or lease contracts). This ASU will supersede the revenue recognition requirements in Topic 605, Revenue Recognition , and most industry-specific guidance, and creates a Topic 606 Revenue from Contracts with Customers. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of the promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments were to be effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. In June 2015, the FASB extended the implementation date for one year to December 15, 2017. Early application is not permitted. We anticipate that we will not be affected, however, we will continue monitoring the final terms of the standard and assessing any impact on revenue recognition as appropriate. In July 2015 , the FASB issued Accounting Standards Update No. 2015-11 , Inventory (Topic 330): Simplifying the Measurement of Inventory . ASU 2015-11 requires that inventory within the scope of this ASU be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The amendments in this ASU do not apply to inventory that is measured using last-in, first-out (LIFO) or the retail inventory method. The amendments apply to all other inventory, which includes inventory that is measured using first-in, first-out (FIFO) or average cost. For all entities, the guidance is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2016. Early adoption is permitted. Therefore, the amendments in ASU 2015-11 will become required for us as of the beginning of our 2017 fiscal year. We are considering early adoption of this guidance as it is consistent with our current policies and not expected to have a material impact upon our financial condition or results of operations. In November 2015, the FASB issued ASU No. 2015-17 , "Balance Sheet Classification of Deferred Taxes." This standard requires that deferred tax liabilities and assets be classified as noncurrent on the balance sheet. It is effective for interim and annual periods beginning after December 15, 2016, but early adoption is permitted. We are considering early adoption of this guidance as it is consistent with our current policies and not expected to have a material impact upon our financial condition

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
	Dec. 31, 2015
Cash and Cash Equivalents [Abstract]
Schedule Of Cash and Cash Equivalents	As of December 31, 2015 2014 $ $ Cash on deposit at banks Money market funds

Inventory (Tables)

Inventory (Tables)	12 Months Ended
	Dec. 31, 2015
Inventory [Abstract]
Schedule of Inventory, Current	As of December 31, 2015 2014 $ $ In-process inventory Plant inventory Conversion facility inventory

Restricted Cash (Tables)

Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2015
Restricted Cash [Abstract]
Schedule of Restricted Cash and Cash Equivalents	As of December 31, 2015 2014 $ $ Money market account (a) Certificates of deposit (a) The bonding requirements for reclamation obligations on various properties have been agreed to by the Wyoming Department of Environmental Quality, United States Department of the Interior and United States Nuclear Regulatory Commission. The restricted money market accounts are pledged as collateral against performance surety bonds which are used to secure the potential costs of reclamation related to those properties. Surety bonds providing $ 27,881 of coverage towards specific reclamation obligations are collateralized by $7,444 of the restricted cash at December 31, 2015.

Mineral Properties (Tables)

Mineral Properties (Tables)	12 Months Ended
	Dec. 31, 2015
Mineral Properties [Abstract]
Mineral Property	Lost Creek Pathfinder Other US Canadian Property Mines Properties Properties Total $ $ $ $ $ Balance, December 31, 2013 Acquisition costs - - Change in estimated reclamation costs (Note 13) - - - Reporting exchange rate adjustment - - - Property write-offs - - - Amortization - - - Balance, December 31, 2014 - Change in estimated reclamation costs (Note 13) - - Amortization - - - Balance, December 31, 2015 -

Capital Assets (Tables)

Capital Assets (Tables)	12 Months Ended
	Dec. 31, 2015
Capital Assets
Capital assets	As of As of December 31, 2015 December 31, 2014 Accumulated Net Book Accumulated Net Book Cost Depreciation Value Cost Depreciation Value $ $ $ $ $ $ Rolling stock Enclosures Machinery and equipment Furniture, fixtures and leasehold improvements Information technology

Accounts Payable and Accrued 32

Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Schedule of Accounts Payable and Accrued Liabilities	As of December 31, 2015 2014 $ $ Accounts payable Severance and ad valorem tax payable Payroll and other taxes

Notes Payable (Tables)

Notes Payable (Tables)	12 Months Ended
	Dec. 31, 2015
Notes Payable [Abstract]
Schedule of Debt	As at As at December 31, 2015 December 31, 2014 Current debt Sweetwater County Loan RMB First Loan Facility Less deferred financing costs Long term debt Sweetwater County Loan RMB First Loan Facility - Less deferred financing costs
Schedule Of Outstanding Debt	Debt Total 2016 2017 2018 2019 2020 Subsequent Maturity Sweetwater County Loan Principal October 1, 2021 Interest RMB First Loan Facility Principal - - - - - December 31, 2016 Interest - - - - - Total

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Taxes
Schedule of Effective Income Tax Rate Reconciliation	Year ended December 31, 2015 2014 2013 $ $ $ Loss before income taxes Statutory rate Expected recovery of income tax Effect of foreign tax rate differences Non-deductible amounts Effect of changes in enacted future rates Effect of change in foreign exchange rates Effect of stock based compensation - - Change in valuation allowance - - Recovery of deferred income taxes - - - -
Schedule of Deferred Tax Assets and Liabilities	As at December 31, 2015 2014 2013 $ $ $ Future income tax assets Deferred tax assets Net operating loss carry forwards Less: valuation allowance - - - Future income tax liabilities Mineral properties - Net deferred tax liability -
Summary of Valuation Allowance	Income tax recovery (expense) 2015 2014 2013 $ $ $ Recovery of deferred tax liability stemming from Pathfinder acquisition - - Current income tax expense - - - -
Summary of Operating Loss Carryforwards [Table Text Block]	Income tax loss carry forwards Canadian (expiring 2016 - 2036) $ United States (expiring 2025 - 2035) $

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2015
Asset Retirement Obligations [Abstract]
Schedule of Asset Retirement Obligations	Year ended Year ended December 31, 2015 December 31, 2014 $ $ Beginning of period Change in estimated liability Accretion expense End of period

Shareholders' Equity and Capi36

Shareholders' Equity and Capital Stock (Tables)	12 Months Ended
	Dec. 31, 2015
Shareholders' Equity and Capital Stock [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	Weighted- Options average # exercise price US$ Outstanding, December 31, 2012 Granted Exercised Forfeited Expired Outstanding, December 31, 2013 Granted Exercised Forfeited Expired Outstanding, December 31, 2014 Granted Exercised Forfeited Expired Outstanding, December 31, 2015
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	Options outstanding Options exercisable Weighted- Weighted- average Aggregate average Aggregate Exercise remaining Intrinsic remaining Intrinsic price Number contractual Value Number contractual Value US$ of options life (years) US$ of options life (years) US$ Expiry (thousands) (thousands) 2.07 0.1 - 0.1 - January 28, 2016 1.13 0.5 - 0.5 - July 7, 2016 0.85 0.7 - 0.7 - September 9, 2016 0.84 0.8 - 0.8 - October 24, 2016 0.66 1.0 - 1.0 - January 12, 2017 1.00 1.1 - 1.1 - February 1, 2017 0.85 1.2 - 1.2 - March 1, 2017 0.55 1.9 1.9 December 7, 2017 0.56 2.3 2.3 April 25, 2018 0.90 2.6 - 2.6 - August 1, 2018 0.87 3.0 - 3.0 - December 27, 2018 1.21 3.2 - 3.2 - March 31, 2019 0.74 3.9 - 3.9 - December 12, 2019 0.82 4.4 - 4.4 - May 29, 2020 0.62 4.6 4.6 August 17, 2020 0.58 4.9 4.9 December 11, 2020 0.88 2.4 1.7
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	Number Weighted of average grant RSUs date fair value US$ Unvested, December 31, 2012 Granted Vested Forfeited Unvested, December 31, 2013 Granted Vested Forfeited Unvested, December 31, 2014 Granted Vested Forfeited Unvested, December 31, 2015
Schedule Of Share-Based Compensation, Shares Authorized Under Restricted Stock Units, By Grant Date	Aggregate Number of Remaining Intrinsic unvested life Value Grant date RSUs (years) US$ (thousands) December 12, 2014 0.95 March 13, 2015 1.20 August 17, 2015 1.63 December 11, 2015 1.95 1.33
Schedule Of Share-Based Compensation, Warrants, Activity	Number Weighted- of average Warrants exercise price US$ Outstanding, December 31, 2012 Granted Cancelled Outstanding, December 31, 2013 Outstanding, December 31, 2014 Expired Outstanding, December 31, 2015
Schedule Of Share-based Compensation Shares Authorized Under Warrants Plans by exercise price range	Aggregate Exercise Remaining Intrinsic price Number contractual Value US$ of warrants life (years) US$ Expiry (thousands) 0.93 0.2 - March 5, 2016 1.35 1.0 - December 19, 2016 1.12 2.5 - June 24, 2018 1.17 2.7 - August 27, 2018 1.00 2.1 -
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	2015 2014 2013 Expected option life (years) 3.6 - 3.67 3.49 - 3.56 3.41 - 3.51 Expected volatility 55 - 57 % 61 - 66 % 61 - 66 % Risk-free interest rate 0.5 - 0.7 % 1.1 - 1.4 % 0.9 - 1.4 % Forfeiture rate (options) 4.9-5.0% 4.5-4.7% 4.2-4.4% Forfeiture rate (RSUs) 7.2-8.3% 7.7% 12.5-22.3% Expected dividend rate 0% 0% 0%

Sales (Tables)

Sales (Tables)	12 Months Ended
	Dec. 31, 2015
Revenue [Abstract]
Schedule Of Revenue	Year ended December 31, 2015 2014 $ $ Sale of produced inventory Company A - Company B Company C Company D Sales of purchased inventory Company E - Total sales of inventory Disposal fee income Recognition of gain from sale of deliveries under assignment -

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Year ended December 31, $ 2016 2017 2018 2019 and thereafter -
Schedule of Maturities of Long-term Debt	Year ended: December 31, 2016 December 31, 2017 December 31, 2018 December 31, 2019 December 31, 2020 Future years
Summary of Off-Take Sales Agreements	SUMMARY OF OFF TAKE SALES AGREEMENTS Production Year Total Pounds Uranium Concentrates Contractually Committed 2016 662,000 pounds 2017 600,000 pounds 2018 500,000 pounds 2019 600,000 pounds 2020 450,000 pounds 2021 250,000 pounds

Other items not affecting cas39

Other items not affecting cash flow (Tables)	12 Months Ended
	Dec. 31, 2015
Noncash Investing and Financing Items [Abstract]
Other Items Not Affecting Cash Flow	Year ended December 31, 2015 2014 2013 $ $ $ Non-cash financing and investing activities: Common shares issued for properties — —

Nature of Operations (Details)

Nature of Operations (Details)	12 Months Ended
	Dec. 31, 2015
Nature of Operations [Abstract]
Date of incorporation	Mar. 22, 2004
Operations Commenced Date	Aug. 1, 2013

Liquidity Risk (Details)

Liquidity Risk (Details)	Dec. 19, 2013USD ($)$ / sharesshares	Jan. 26, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2015CAD / shares
Liquidity Risk [Line Items]
Common shares and warrants issued for cash, net of issue costs			$ 65	$ (50,000)	$ 3,396,000
Common shares issued for cash, net of issue costs (in shares) | shares	4,709,089
Share issue costs	$ 200,000			$ 50,000	$ 238,000
Price per share | (per share)	$ 1.10					CAD 0.89
Subsequent Event [Member]
Liquidity Risk [Line Items]
Common shares issued for cash, net of issue costs (in shares) | shares		12,900,000
Share issue costs		$ 600,000
Price per share | $ / shares		$ 0.50
Subsequent Event [Member] | Private Placement [Member]
Liquidity Risk [Line Items]
Common shares and warrants issued for cash, net of issue costs		$ 5,900,000

Summary of Significant Accoun42

Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2014
Deferred revenue contract period		2 years
Current deferred financing costs	$ 152		$ 190
Deferred financing costs	$ 577		$ 716
Computer Equipment [Member]
Estimated life	3 years
Software [Member]
Estimated life	3 years
Lost Creek Property
Estimated life	10 years
Maximum | Plant enclosure and equipment
Estimated life	20 years

Cash and Cash Equivalents (Deta

Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash and Cash Equivalents [Abstract]
Cash on deposit at banks	$ 1,202	$ 431
Money market funds	241	2,673
Cash and cash equivalents	$ 1,443	$ 3,104	$ 1,627	$ 11,536

Inventory (Details)

Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Inventory
Inventory, Net, Total	$ 3,345	$ 5,168
Inventory Valuation Reserves	0
In Process Inventory [Member]
Inventory
Inventory, Net, Total	994	2,084
Plant Inventory [Member]
Inventory
Inventory, Net, Total	742	882
Conversion Facility Inventory [Member]
Inventory
Inventory, Net, Total	$ 1,609	$ 2,202

Restricted Cash (Details)

Restricted Cash (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Restricted Cash
Non-current restricted cash	$ 7,557,000	$ 7,556,000
Reclamation bonding requirement	27,881
Certificate of deposit [Member]
Restricted Cash
Non-current restricted cash	100,000	100,000
Money Market Funds [Member]
Restricted Cash
Non-current restricted cash	7,457,000	$ 7,456,000
Money Market Funds [Member] | Surety Bond [Member]
Restricted Cash
Restricted cash pledged as collateral	$ 7,444,000

Mineral Properties - rollforwar

Mineral Properties - rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Balance at beginning of period	$ 52,750	$ 52,702
Acquisition costs		50
Increase in reclamation costs	2,101	5,669
Reporting exchange rate adjustment		(6)
Property write-offs		(483)	$ (1,430)
Amortization	(4,241)	(5,182)
Balance at end of period	50,610	52,750	52,702
Canadian Properties [Member]
Balance at beginning of period		489
Reporting exchange rate adjustment		(6)
Property write-offs		(483)
Balance at end of period			489
Lost Creek Property
Balance at beginning of period	18,512	23,686
Acquisition costs		8
Increase in reclamation costs	2,391
Amortization	(4,241)	(5,182)
Balance at end of period	16,662	18,512	23,686
Other Us Properties [Member]
Balance at beginning of period	13,210	13,210
Balance at end of period	13,210	13,210	13,210
Path Finder Mines [Member]
Balance at beginning of period	21,028	15,317
Acquisition costs		42
Increase in reclamation costs	(290)	5,669
Balance at end of period	$ 20,738	$ 21,028	$ 15,317

Mineral Properties (Details)

Mineral Properties (Details) $ in Thousands, shares in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2013USD ($)	Apr. 30, 2013USD ($)itemshares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2005USD ($)	Dec. 31, 2015
Stock Issued During Period Value Issued For Royalty Interest				$ 763
Write-off of mineral properties			$ 483	1,430
Lost Creek Property
Royalty (as a percent)		1.67%
Number Of Mining Claims | item		20
Stock Issued During Period Shares Issued For Royalty Interest | shares		1
Stock Issued During Period Value Issued For Royalty Interest		$ 763
Mining Claims In LC North LC East or LC West
Royalty (as a percent)						0.00%
Mustang Project
Write-off of mineral properties				$ 1,168
Nfu Wyoming LLC | Lost Creek Property
Percentage of asset acquired					100.00%
Aggregate consideration					$ 20,000
Pathfinder Mines Corporation
Aggregate consideration	$ 6,700
Royalty (as a percent)	5.00%			5.00%
Estimated asset reclamation obligation	$ 5,700			$ 5,700
Deferred tax liabilities	3,300			3,300
Mineral properties	$ 15,300			$ 15,300

Capital Assets (Details)

Capital Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Capital Assets
Cost	$ 39,067	$ 39,076
Accumulated Depreciation	8,279	6,083
Net Book Value	30,788	32,993
Depreciation	6,504	7,643	$ 537
Rolling stock [Member]
Capital Assets
Cost	3,819	3,878
Accumulated Depreciation	3,179	2,852
Net Book Value	640	1,026
Building Enclosures [Member]
Capital Assets
Cost	32,987	32,968
Accumulated Depreciation	3,578	1,927
Net Book Value	29,409	31,041
Machinery and equipment [Member]
Capital Assets
Cost	1,031	992
Accumulated Depreciation	507	426
Net Book Value	524	566
Furniture, fixtures and leasehold improvements [Member]
Capital Assets
Cost	119	119
Accumulated Depreciation	92	81
Net Book Value	27	38
Information technology [Member]
Capital Assets
Cost	1,111	1,119
Accumulated Depreciation	923	797
Net Book Value	$ 188	$ 322

Equity Investment (Details)

Equity Investment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2012
Equity Investment
Write-off of mineral properties		$ 483	$ 1,430
Bootheel Project Llc [Member]
Equity Investment
Project Expenditure Percentage	25.00%
Equity Method Investment, Ownership Percentage				19.10%
Write-off of mineral properties	$ 0
Jet Metals | Bootheel Project Llc [Member]
Equity Investment
Project Expenditure Percentage	75.00%

Accounts Payable and Accrued 50

Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 1,402	$ 1,503
Severance and ad valorem tax payable	1,992	1,947
Payroll and other taxes	1,173	1,082
Accounts payable and accrued liabilities	$ 4,567	$ 4,532

Notes Payable - Current vs Long

Notes Payable - Current vs Long-term (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current debt
Current Debt	$ 8,679	$ 7,374
Less deferred financing costs	(152)	(190)
Long-term Debt, Current Maturities, Total	8,527	7,184
Long term debt
Long term debt	24,514	33,193
Less deferred financing costs	(577)	(716)
Long-term Debt	23,937	32,477
Sweetwater IDR Bond [Member]
Current debt
Current Debt	4,367	4,124
Long term debt
Long term debt	24,514	28,881
RMBAH First Loan Facility [Member]
Current debt
Current Debt	$ 4,312	3,250
Long term debt
Long term debt		$ 4,312

Notes Payable - Maturity table

Notes Payable - Maturity table (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Notes Payable
Total			$ 38,674
Debt Instrument, Maturity Date	Dec. 31, 2016	Mar. 31, 2016	Oct. 1, 2021
Sweetwater IDR Bond [Member]
Notes Payable
Principal			$ 28,881
Interest			5,242
RMBAH First Loan Facility [Member]
Notes Payable
Principal			4,312
Interest			239
2,016
Notes Payable
Total			10,486
2016 | Sweetwater IDR Bond [Member]
Notes Payable
Principal			4,367
Interest			1,568
2016 | RMBAH First Loan Facility [Member]
Notes Payable
Principal			4,312
Interest			239
2,017
Notes Payable
Total			5,934
2017 | Sweetwater IDR Bond [Member]
Notes Payable
Principal			4,623
Interest			1,311
2,018
Notes Payable
Total			5,934
2018 | Sweetwater IDR Bond [Member]
Notes Payable
Principal			4,895
Interest			1,039
2,019
Notes Payable
Total			5,935
2019 | Sweetwater IDR Bond [Member]
Notes Payable
Principal			5,183
Interest			752
2,020
Notes Payable
Total			5,934
2020 | Sweetwater IDR Bond [Member]
Notes Payable
Principal			5,487
Interest			447
Subsequent Years
Notes Payable
Total			4,451
Subsequent Years | Sweetwater IDR Bond [Member]
Notes Payable
Principal			4,326
Interest			$ 125

Notes Payable (Details)

Notes Payable (Details) $ / shares in Units, $ in Thousands

Dec. 31, 2016

Mar. 31, 2016USD ($)item

Oct. 15, 2015USD ($)

Sep. 19, 2014USD ($)

Mar. 14, 2014USD ($)

Dec. 19, 2013USD ($)$ / sharesshares

Oct. 15, 2013USD ($)

Jun. 24, 2013USD ($)

Dec. 31, 2015USD ($)$ / shares

Dec. 31, 2014USD ($)$ / shares

Dec. 31, 2013USD ($)$ / shares

Oct. 23, 2013item

Dec. 31, 2012$ / shares

Notes Payable

Maturity Date

Dec. 31, 2016

Mar. 31, 2016

Oct. 1, 2021

Class Of Warrant Or Right Issued Number | shares

2,354,545

Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights | $ / shares

$ 1.35

$ 1

$ 1.20

$ 0.92

$ 0.82

Number of installments | item

4

Write off of Deferred Debt Issuance Cost

$ 5,700

Proceeds from debt financing

$ 5,000

$ 75,100

RMBAH First Loan Facility [Member]

Notes Payable

Proceeds from Issuance of Long-term Debt

$ 1,500

$ 20,000

Fixed interest rate (as a percent)

8.75%

Proceeds From Lines Of Credit

$ 3,500

$ 3,500

$ 3,500

Proceeds from debt financing

$ 5,000

Periodic payment amount

4,312

Line of Credit Facility, Remaining Borrowing Capacity

3,500

Maximum Borrowing Capacity

$ 10,000

$ 20,000

Sweetwater IDR Bond [Member]

Notes Payable

Proceeds from Issuance of Long-term Debt

$ 34,000

Periodic payment amount

$ 28,881

Due Quarterly Commencing From January One Two Thousand Fourteen [Member] | Sweetwater IDR Bond [Member]

Notes Payable

Fixed interest rate (as a percent)

5.75%

Due Quarterly Commencing From January One Two Thousand Fifteen [Member] | Sweetwater IDR Bond [Member]

Notes Payable

Number of installments | item

28

Due Quarterly Commencing From June Thirty Two Thousand Fourteen [Member] | RMBAH First Loan Facility [Member]

Notes Payable

Periodic payment amount

$ 810

Income Taxes - reconciliation (

Income Taxes - reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes
Loss before income taxes	$ (4,110)	$ (8,749)	$ (30,353)
Statutory rate	26.50%	26.50%	26.50%
Expected recovery of income tax	$ (1,089)	$ (2,318)	$ (8,044)
Effect of foreign tax rate differences	(212)	(619)	(3,247)
Non-deductable amounts	57	106	108
Effect of changes in enacted future rates	76	65	(286)
Effect of change in foreign exchange rates	(155)	(186)	(161)
Effect of stock based compensation			(159)
Change in valuation allowance	(1,992)	$ 2,952	$ 11,471
Effect of income tax reconciliation before recovery of income taxes	(3,315)
Recovery of future income taxes	(3,345)
Current Income Tax Expense (Benefit), Total	$ 30

Income Taxes - deferred tax com

Income Taxes - deferred tax components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred Income Tax Assets And Liabilities [Line Items]
Deferred tax assets	$ 8,386	$ 8,074	$ 8,337
Net operating loss carry forwards	41,647	42,251	39,432
Less: valuation allowance	$ (50,033)	$ (50,325)	$ (47,769)
Deferred Tax Assets, Total
Mineral properties		$ 3,345	$ 3,345
Net deferred tax liability		$ 3,345	$ 3,345
Valuation Allowance [Abstract]
Recovery of future income taxes	$ 3,345
Current income tax expense	(30)
Effect of income tax reconciliation before recovery of income taxes	3,315
Pathfinder Mines Corporation
Valuation Allowance [Abstract]
Recovery of future income taxes	$ 3,345

Income Taxes (Details)

Income Taxes (Details) $ in Thousands	Dec. 31, 2015USD ($)
UNITED STATES
Income Tax Loss Carryforwars [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 92,971
CANADA
Income Tax Loss Carryforwars [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	$ 30,597

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Change in estimated liability	$ 2,101	$ 5,669
Lost Creek Property
Estimated Future Cash Undiscounted Amount	$ 14,600
Change in estimated liability		$ 0
Lost Creek Property | Minimum
Discount Rate Of Asset Retirement Obligations	0.10%
Lost Creek Property | Maximum
Discount Rate Of Asset Retirement Obligations	3.20%
Path Finder Mines [Member]
Estimated Future Cash Undiscounted Amount	$ 12,400
Path Finder Mines [Member] | Minimum
Discount Rate Of Asset Retirement Obligations	2.16%
Path Finder Mines [Member] | Maximum
Discount Rate Of Asset Retirement Obligations	3.00%

Asset Retirement Obligations 58

Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Asset Retirement Obligation Rollforward
Beginning of year	$ 23,445	$ 17,279
Change in estimated liability	2,101	5,669
Accretion expense	515	497
End of period	$ 26,061	$ 23,445

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities
Warrants Price Per Share On Nonhedging Derivative Financial Instrument	$ 1.35
Warrants mark to market adjustment (note 14)	$ 307	$ 946
Capital Stock
Other Liabilities
Number of securities called by each unit	1
Warrants
Other Liabilities
Number of securities called by each unit	0.5
Warrants mark to market adjustment (note 14)	$ 307	$ 946

Shareholders' Equity and Capi60

Shareholders' Equity and Capital Stock - options activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options Rollforward
Outstanding, Beginning Balance	8,468,614	9,273,659	8,511,722
Granted, Options	2,384,052	1,136,776	1,876,670
Exercised, Options	(608,531)	(1,623,139)	(377,927)
Forfeited, Options	(258,918)	(303,612)	(31,806)
Expired, Options	(10,810)	(15,070)	(705,000)
Outstanding Ending Balance, Options	9,974,407	8,468,614	9,273,659
Outstanding, Beginning Balance, Weighted-average exercise price	$ 1.12	$ 1.19	$ 1.32
Granted, Weighted-average exercise price	0.67	0.93	1.07
Exercised, Weighted-average exercise price	0.66	0.83	0.79
Forfeited, Weighted-average exercise price	1.09	1.45	0.78
Expired, Weighted-average exercise price	0.64	0.82	1.69
Outstanding Ending Balance, Weighted-average exercise price	0.88	$ 1.12	$ 1.19
Grant date intrinsic value	$ 0

Shareholders' Equity and Capi61

Shareholders' Equity and Capital Stock - o/s options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Outstanding Stock Options
Exercise price	$ 0.88	$ 1.12	$ 1.19	$ 1.32
Number of options, Outstanding	9,974,407	8,468,614	9,273,659	8,511,722
Weighted- average remaining contractual life (years), Outstanding	2 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 217
Number of options, Exercisable	7,484,229
Weighted- average remaining contractual life (years), Exercisable	1 year 8 months 12 days
Aggregate Intrinsic Value, Exercisable	$ 142
Stock Option Exercise Price Range One [Member]
Outstanding Stock Options
Exercise price	$ 2.07
Number of options, Outstanding	1,172,648
Weighted- average remaining contractual life (years), Outstanding	1 month 6 days
Number of options, Exercisable	1,172,648
Weighted- average remaining contractual life (years), Exercisable	1 month 6 days
Expiry	Jan. 28, 2016
Stock Option Exercise Price Range Two [Member]
Outstanding Stock Options
Exercise price	$ 1.13
Number of options, Outstanding	545,000
Weighted- average remaining contractual life (years), Outstanding	6 months
Number of options, Exercisable	545,000
Weighted- average remaining contractual life (years), Exercisable	6 months
Expiry	Jul. 7, 2016
Stock Option Exercise Price Range Three [Member]
Outstanding Stock Options
Exercise price	$ 0.85
Number of options, Outstanding	615,238
Weighted- average remaining contractual life (years), Outstanding	8 months 12 days
Number of options, Exercisable	615,238
Weighted- average remaining contractual life (years), Exercisable	8 months 12 days
Expiry	Sep. 9, 2016
Stock Option Exercise Price Range Four [Member]
Outstanding Stock Options
Exercise price	$ 0.84
Number of options, Outstanding	200,000
Weighted- average remaining contractual life (years), Outstanding	9 months 18 days
Number of options, Exercisable	200,000
Weighted- average remaining contractual life (years), Exercisable	9 months 18 days
Expiry	Oct. 24, 2016
Stock Option Exercise Price Range Five [Member]
Outstanding Stock Options
Exercise price	$ 0.66
Number of options, Outstanding	897,769
Weighted- average remaining contractual life (years), Outstanding	1 year
Number of options, Exercisable	897,769
Weighted- average remaining contractual life (years), Exercisable	1 year
Expiry	Jan. 12, 2017
Stock Option Exercise Price Range Six [Member]
Outstanding Stock Options
Exercise price	$ 1
Number of options, Outstanding	200,000
Weighted- average remaining contractual life (years), Outstanding	1 year 1 month 6 days
Number of options, Exercisable	200,000
Weighted- average remaining contractual life (years), Exercisable	1 year 1 month 6 days
Expiry	Feb. 1, 2017
Stock Option Exercise Price Range Seven [Member]
Outstanding Stock Options
Exercise price	$ 0.85
Number of options, Outstanding	100,000
Weighted- average remaining contractual life (years), Outstanding	1 year 2 months 12 days
Number of options, Exercisable	100,000
Weighted- average remaining contractual life (years), Exercisable	1 year 2 months 12 days
Expiry	Mar. 1, 2017
Stock Option Exercise Price Range Eight [Member]
Outstanding Stock Options
Exercise price	$ 0.55
Number of options, Outstanding	1,243,265
Weighted- average remaining contractual life (years), Outstanding	1 year 10 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 96
Number of options, Exercisable	1,243,265
Weighted- average remaining contractual life (years), Exercisable	1 year 10 months 24 days
Aggregate Intrinsic Value, Exercisable	$ 96
Expiry	Dec. 7, 2017
Stock Option Exercise Price Range Nine [Member]
Outstanding Stock Options
Exercise price	$ 0.56
Number of options, Outstanding	559,358
Weighted- average remaining contractual life (years), Outstanding	2 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding	$ 38
Number of options, Exercisable	559,358
Weighted- average remaining contractual life (years), Exercisable	2 years 3 months 18 days
Aggregate Intrinsic Value, Exercisable	$ 38
Expiry	Apr. 25, 2018
Stock Option Exercise Price Range Ten [Member]
Outstanding Stock Options
Exercise price	$ 0.90
Number of options, Outstanding	100,000
Weighted- average remaining contractual life (years), Outstanding	2 years 7 months 6 days
Number of options, Exercisable	100,000
Weighted- average remaining contractual life (years), Exercisable	2 years 7 months 6 days
Expiry	Aug. 1, 2018
Stock Option Exercise Price Range Eleven [Member]
Outstanding Stock Options
Exercise price	$ 0.87
Number of options, Outstanding	904,164
Weighted- average remaining contractual life (years), Outstanding	3 years
Number of options, Exercisable	904,164
Weighted- average remaining contractual life (years), Exercisable	3 years
Expiry	Dec. 27, 2018
Stock Option Exercise Price Range Twelve [Member]
Outstanding Stock Options
Exercise price	$ 1.21
Number of options, Outstanding	100,000
Weighted- average remaining contractual life (years), Outstanding	3 years 2 months 12 days
Number of options, Exercisable	100,000
Weighted- average remaining contractual life (years), Exercisable	3 years 2 months 12 days
Expiry	Mar. 31, 2019
Stock Option Exercise Price Range Thirteen [Member]
Outstanding Stock Options
Exercise price	$ 0.74
Number of options, Outstanding	970,971
Weighted- average remaining contractual life (years), Outstanding	3 years 10 months 24 days
Number of options, Exercisable	564,382
Weighted- average remaining contractual life (years), Exercisable	3 years 10 months 24 days
Expiry	Dec. 12, 2019
Stock Option Exercise Price Range Fourteen [Member]
Outstanding Stock Options
Exercise price	$ 0.82
Number of options, Outstanding	200,000
Weighted- average remaining contractual life (years), Outstanding	4 years 4 months 24 days
Number of options, Exercisable	64,000
Weighted- average remaining contractual life (years), Exercisable	4 years 4 months 24 days
Expiry	May 29, 2020
Share-Based Compensation Arrangement By Share-Based Payment Award, Options Outstanding Number 15 Member
Outstanding Stock Options
Exercise price	$ 0.62
Number of options, Outstanding	824,296
Weighted- average remaining contractual life (years), Outstanding	4 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding	$ 14
Number of options, Exercisable	84,235
Weighted- average remaining contractual life (years), Exercisable	4 years 7 months 6 days
Aggregate Intrinsic Value, Exercisable	$ 1
Expiry	Aug. 17, 2020
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number Sixteen member
Outstanding Stock Options
Exercise price	$ 0.58
Number of options, Outstanding	1,341,698
Weighted- average remaining contractual life (years), Outstanding	4 years 10 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 69
Number of options, Exercisable	134,170
Weighted- average remaining contractual life (years), Exercisable	4 years 10 months 24 days
Aggregate Intrinsic Value, Exercisable	$ 7
Expiry	Dec. 11, 2020

Shareholders' Equity and Capi62

Shareholders' Equity and Capital Stock - RSU activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
RSU Rollforward
Number of RSUs Unvested, Beginning Balance	379,435	691,610	826,425
Granted, RSU	795,592	259,192	273,834
Number of RSUs Vested	(286,223)	(527,407)	(402,581)
Number of RSUs Forfeited	(28,709)	(43,960)	(6,068)
Number of RSUs Unvested, Ending Balance	860,095	379,435	691,610	826,425
Number of RSUs Unvested, Beginning Balance, Weighted average grant date fair value	$ 0.89	$ 0.90
Granted, Weighted average grant date fair value	0.83	1.20	$ 1.23	$ 1.15
Vested, Weighted average grant date fair value	0.91	0.74	1.89
Forfeited, Weighted average grant date fair value	0.85	0.92	0.78
Number of RSUs Unvested, Ending Balance, Weighted Average Grant Date Fair Value	$ 0.82	$ 0.89	$ 0.90

Shareholders' Equity and Capi63

Shareholders' Equity and Capital Stock - o/s RSUs (Details) - USD ($) $ in Thousands	Dec. 11, 2015	Aug. 17, 2015	Mar. 13, 2015	Dec. 12, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
RSUs
Number of unvested units					860,095	379,435	691,610	826,425
Remaining life (years)					1 year 3 months 29 days
Aggregate Intrinsic Value					$ 552
Grant Date One [Member]
RSUs
Grant date				Dec. 12, 2014
Number of unvested units				110,485
Remaining life (years)				11 months 12 days
Aggregate Intrinsic Value				$ 71
Grant Date Two [Member]
RSUs
Grant date			Mar. 13, 2015
Number of unvested units			233,608
Remaining life (years)			1 year 2 months 12 days
Aggregate Intrinsic Value			$ 150
Grant Date Three [Member]
RSUs
Grant date		Aug. 17, 2015
Number of unvested units		205,570
Remaining life (years)		1 year 7 months 17 days
Aggregate Intrinsic Value		$ 132
Share-Based Compensation Arrangement By Share-Based Number Four Member
RSUs
Grant date	Dec. 11, 2015
Number of unvested units	310,432
Remaining life (years)	1 year 11 months 12 days
Aggregate Intrinsic Value	$ 199

Shareholders' Equity and Capi64

Shareholders' Equity and Capital Stock - warrants activity (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares	Dec. 31, 2013$ / shares$ / itemshares
Shareholders' Equity and Capital Stock [Abstract]
Outstanding Beginning Balance, Warrants | shares	8,374,112	150,000
Cancelled, Warrants | shares	(150,000)	(1,550,400)
Outstanding Ending Balance, Warrants | shares	8,224,112	8,374,112
Outstanding Beginning Balance, Weighted-average exercise price | $ / shares	$ 1.20	$ 0.82
Granted, Weighted-average exercise price | $ / item		9,774,512
Cancelled, Weighted-average exercise price | $ / shares	0.89	$ 0.90
Outstanding Ending Balance, Weighted-average exercise price | $ / shares	$ 1	$ 0.92

Shareholders' Equity and Capi65

Shareholders' Equity and Capital Stock - o/s warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 19, 2013	Dec. 31, 2012
Class of Warrant or Right
Exercise price	$ 1	$ 1.20	$ 0.92	$ 1.35	$ 0.82
Number of warrants	8,224,112	8,374,112	8,374,112		150,000
$0.93 [Member]
Class of Warrant or Right
Exercise price	$ 0.93
Number of warrants	25,000
Remaining contractual life (years)	2 months 12 days
Expiry	Mar. 5, 2016
$1.35 [Member]
Class of Warrant or Right
Exercise price	$ 1.35
Number of warrants	2,354,545
Remaining contractual life (years)	1 year
Expiry	Dec. 19, 2016
$1.12 [Member]
Class of Warrant or Right
Exercise price	$ 1.12
Number of warrants	4,294,167
Remaining contractual life (years)	2 years 6 months
Expiry	Jun. 24, 2018
$1.17 [Member]
Class of Warrant or Right
Exercise price	$ 1.17
Number of warrants	1,550,400
Remaining contractual life (years)	2 years 8 months 12 days
Expiry	Aug. 27, 2018
$1.00 [Member]
Class of Warrant or Right
Exercise price	$ 1
Number of warrants	8,224,112
Remaining contractual life (years)	2 years 1 month 6 days

Shareholders' Equity and Capi66

Shareholders' Equity and Capital Stock - addl information (Details)	Dec. 19, 2013USD ($)$ / sharesshares	Jan. 31, 2016shares	Jan. 31, 2015shares	Mar. 31, 2015shares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares	Dec. 31, 2013USD ($)shares	Dec. 31, 2015CAD / shares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014CAD / sharesshares	Dec. 31, 2014$ / sharesshares	Dec. 31, 2013CAD / sharesshares	Dec. 31, 2013$ / sharesshares	Dec. 31, 2012$ / sharesshares
Stockholder's Equity Note [Line Items]
Common Stock Shares Issued In Exchange Of Restricted Shares Units		197,374	197,374	215,168	215,168	182,194	338,451
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					608,531	1,623,139	377,927
Proceeds from Stock Options Exercised | $					$ 410,000	$ 1,347,000	$ 275,000
Stock Issued During Period, Shares, New Issues	4,709,089
Share Price | (per share)	$ 1.10							CAD 0.89
Payments Of Stock Issuance Costs | $	$ 200,000					50,000	238,000
Proceeds from Issuance of Private Placement | $	$ 5,100,000
Stock Issued During Period, Value, New Issues | $					$ 65	$ (50,000)	$ 3,396,000
Percent or RSUs that vest					286,223	527,407	402,581
Minimum Service For RSU Plan					5 years
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Percentage					10.00%
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number									9,974,407	8,468,614	8,468,614	9,273,659	9,273,659	8,511,722
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number									7,484,229
Stock based compensation | $					$ 893,000	$ 928,000	$ 1,153,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $					$ 600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					795,592	259,192	273,834
RSUs vested but not redeemed (in shares)										280,529	280,529
RSUs redeemed against tax effect (in shares)			65,361
Class Of Warrant Or Right Issued Number	2,354,545
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1.35								$ 1		$ 1.20		$ 0.92	$ 0.82
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price | CAD / shares										CAD 0.96		CAD 1.20
Capital Stock
Stockholder's Equity Note [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period					608,531	1,623,139	377,927
Stock Issued During Period, Shares, New Issues							4,709,089
Stock Issued During Period, Value, New Issues | $						$ (50,000)	$ 3,396,000
Number of securities called by each unit									1
Warrants
Stockholder's Equity Note [Line Items]
Number of securities called by each unit									0.5
In Money Stock Option [Member]
Stockholder's Equity Note [Line Items]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number									3,968,617
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number									2,021,028
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | $									$ 700,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition					1 year 2 months 12 days
Restricted Stock Units (RSUs) [Member]
Stockholder's Equity Note [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options | $									$ 600,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition					1 year 6 months
RSUs vested but not redeemed (in shares)									212,803
RSUs redeemed against tax effect (in shares)		15,429
Restricted Stock Units (RSUs) [Member] | Capital Stock
Stockholder's Equity Note [Line Items]
Number of securities called by each unit									1
Employee Stock Option [Member]
Stockholder's Equity Note [Line Items]
Proceeds from Stock Options Exercised | $							$ 300,000
Four and One Half Months After Grant [Member]
Stockholder's Equity Note [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Percentage					22.00%
Nine Months After Grant [Member]
Stockholder's Equity Note [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Percentage					22.00%
Thirteen and One Half Months After Grant [Member]
Stockholder's Equity Note [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Percentage					22.00%
Eighteen Months After Date Of Grant [Member]
Stockholder's Equity Note [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Percentage					24.00%
First Anniversary [Member]
Stockholder's Equity Note [Line Items]
Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Share Units Vesting Percentage					50.00%
Second Anniversary [Member]
Stockholder's Equity Note [Line Items]
Percent or RSUs that vest					100
Share-Based Compensation Arrangement By Share-Based Payment Award, Restricted Share Units Vesting Percentage					50.00%
Maximum | Restricted Stock Units (RSUs) [Member]
Stockholder's Equity Note [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price | CAD / shares								1.22
Minimum | Restricted Stock Units (RSUs) [Member]
Stockholder's Equity Note [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price | CAD / shares								CAD 0.80

Shareholders' Equity and Capi67

Shareholders' Equity and Capital Stock - assumptions (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, Minimum	56.00%	61.00%	61.00%
Expected volatility, Maximum	57.00%	66.00%	66.00%
Expected dividend rate	0.00%	0.00%	0.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate (as a percent)		7.70%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, Maximum	0.70%	1.40%	1.40%
Maximum | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected award life (in years)	3 years 8 months 1 day	3 years 6 months 22 days	3 years 6 months 4 days
Forfeiture rate (as a percent)	5.00%	4.70%	4.40%
Maximum | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate (as a percent)	8.30%		22.30%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, Minimum	0.50%	1.10%	0.90%
Minimum | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected award life (in years)	3 years 7 months 6 days	3 years 5 months 27 days	3 years 1 month 21 days
Forfeiture rate (as a percent)	4.90%	4.50%	4.20%
Minimum | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate (as a percent)	7.80%		12.50%

Sales (Details)

Sales (Details)	12 Months Ended
	Dec. 31, 2015USD ($)item	Dec. 31, 2014USD ($)
Sales
Number of Sales Contracts with Delivery Obligations | item	2
Sales Revenue, Goods, Net	$ 41,877,000	$ 29,349,000
Disposal fees	69,000	323,000
Recognition of gain from sale of deliveries under assignment		2,507,000
Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	41,808,000	26,519,000
Company A [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	10,674,000
Company B [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	6,671,000	9,199,000
Company C [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	6,518,000	7,197,000
Company D [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	6,098,000	10,123,000
Company A, B, C, D [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	29,961,000	26,519,000
Company E [Member] | Sales Revenue, Goods, Net [Member]
Sales
Sales Revenue, Goods, Net	$ 11,846,000
Customer Concentration Risk [Member]
Sales
Sales Revenue, Goods, Net		100
Concentration Risk, Percentage	100.00%
Disposal fees		1.1
Disposal Fees Concentration Risk Percentage	0.20%
Recognition of gain from sale of deliveries under assignment	$ 0	$ 8.5
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	99.80%	90.40%
Customer Concentration Risk [Member] | Company A [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	25.50%	0.00%
Customer Concentration Risk [Member] | Company B [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	15.90%	31.30%
Customer Concentration Risk [Member] | Company C [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	15.60%	24.50%
Customer Concentration Risk [Member] | Company D [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	14.60%	34.50%
Customer Concentration Risk [Member] | Company A, B, C, D [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	71.50%	90.40%
Customer Concentration Risk [Member] | Company E [Member] | Sales Revenue, Goods, Net [Member]
Sales
Concentration Risk, Percentage	28.40%	0.00%

Financial instruments (Details)

Financial instruments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
Credit Concentration Risk
Financial Instruments
Cash, insured amount	$ 0.5
Cash, uninsured amount	8.5
Credit Availability Concentration Risk
Financial Instruments
Accounts Payable, Trade, Current	1.8
Interest Rate Risk
Financial Instruments
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Adverse Change in Discount Rate	$ 0.6
Minimum | Credit Concentration Risk
Financial Instruments
Investment Interest Rate	0.18%
Minimum | Credit Availability Concentration Risk
Financial Instruments
Debt Instrument, Term	0 years
Maximum | Credit Concentration Risk
Financial Instruments
Investment Interest Rate	0.40%
Maximum | Credit Availability Concentration Risk
Financial Instruments
Debt Instrument, Term	7 years
Maximum | Currency Risk
Financial Instruments
Foreign Currency Cash And Cash Equivalents At Carrying Value	$ 0.1

Commitments - Lease table (Deta

Commitments - Lease table (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating leases
2,016	$ 388
2,017	288
2,018	188
Minimum annual lease payments	864
Operating Leases, Rent Expense	$ 200	$ 200	$ 200

Commitments - Schedule of Debt

Commitments - Schedule of Debt Principal Payments (Details) $ in Thousands	Dec. 31, 2015USD ($)
Commitments [Abstract]
December 31, 2016	$ 8,679
December 31, 2017	4,623
December 31, 2018	4,895
December 31, 2019	5,183
December 31, 2020	5,487
Future years	4,326
Long term debt	$ 33,193

Commitments - Off Take Sales Ag

Commitments - Off Take Sales Agreements (Details)	12 Months Ended
	Dec. 31, 2015itemlb
Commitments [Abstract]
Number of off-take sales agreements | item	10
2016 Commitment (in pounds)	662,000
2017 Commitment (in pounds)	600,000
2018 Commitment (in pounds)	500,000
2019 Commitment (in pounds)	600,000
2020 Commitment (in pounds)	450,000
2021 Commitment (in pounds)	250,000

Other items not affecting cas73

Other items not affecting cash flow (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2013USD ($)
Non-cash financing and investing activities:
Common shares issued for properties	$ 783

Subsequent Event (Details)

Subsequent Event (Details)	Dec. 19, 2013USD ($)$ / sharesshares	Jan. 26, 2016USD ($)$ / sharesshares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2015CAD / shares
Subsequent Event [Line Items]
Share issue costs	$ 200,000		$ 50,000	$ 238,000
Common shares issued for cash, net of issue costs (in shares) | shares	4,709,089
Share Price | (per share)	$ 1.10				CAD 0.89
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from shares issued		$ 5,900,000
Share issue costs		$ 600,000
Common shares issued for cash, net of issue costs (in shares) | shares		12,900,000
Share Price | $ / shares		$ 0.50