Convertible Loan	12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]
Convertible Loan	6. CONVERTIBLE LOAN On November 13, 2013, the Company entered into a loan agreement (the “RCF Loan”) with Resource Capital Fund V L.P. (“RCF”), whereby RCF agreed, subject to the terms and conditions set forth in the RCF Loan, to provide a secured convertible loan facility of up to $15.0 million to the Company, which was subsequently amended on April 29, 2014 to reduce the amount available thereunder from $15.0 million to $8.0 million. The Company exchanged $2.5 million in principal for its common shares in December 2016 and repaid the remaining $5.5 million outstanding under the RCF Loan on February 9, 2017. No further obligations remain under the RCF Loan following the repayment. As a result of the repayment, the Company recorded a loss of $39,000 on the extinguishment of debt which represented the difference between the principal amount of $5.5 million and the carrying value of the RCF Loan on the date of repayment.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

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