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Derivative Instruments - Additional Information (Details)
In Thousands, unless otherwise specified
Mar. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Mar. 31, 2014
Investor warrants expiring April 30, 2015 [Member]
USD ($)
Mar. 31, 2014
Investor warrants expiring April 30, 2015 [Member]
Dec. 31, 2013
Investor warrants expiring April 30, 2015 [Member]
USD ($)
Mar. 31, 2014
Investor warrants expiring March 29, 2016 [Member]
USD ($)
Mar. 31, 2014
Investor warrants expiring March 29, 2016 [Member]
Dec. 31, 2013
Investor warrants expiring March 29, 2016 [Member]
USD ($)
Dec. 31, 2011
Options to Contractors [Member]
USD ($)
Dec. 31, 2010
Options to Contractors [Member]
USD ($)
Derivative [Line Items]                    
Common shares issuable upon exercise of outstanding warrants 22,035   13,337 [1] 13,337 [1]   4,698 [2] 4,698 [2]      
Warrant exercise price     1.44 1.44   1.44 1.44      
Fair value of warrants     $ 3,428   $ 2,015 $ 1,974   $ 794    
Derivative Liability $ 116 $ 54             $ 108 $ 86
[1] On April 30, 2010, the Company announced that it had completed a first closing of a non-brokered private placement (“Private Placement”) of 240,066 units, at a price of CAD$0.03 per unit for net proceeds of CAD$7,200. Each unit consisted of one common share and one common share purchase warrant (a “Warrant”). As a result of the share consolidation, each eighteen (18) Warrants now entitle the holder thereof to purchase one common share of the Company at a purchase price of CAD$1.44 per whole share for a period of five years from the issue date.
[2] On March 29, 2011, the Company announced that it had completed a non-brokered rights offering of 84,559 units, at a price of CAD$0.03 per unit for total net proceeds of $2,547. Each unit consisted of one common share and one common share purchase warrant (a “Warrant”). As a result of the share consolidation, each eighteen (18) Warrants now entitle the holder thereof to purchase one common share of the Company at a purchase price of CAD$1.44 per whole share for a period of five years from the issue date.