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Share capital (Tables)
6 Months Ended
May 31, 2013
Schedule of Common Shares Issued and Outstanding [Table Text Block]
    in thousands of d ollars, except share amounts  
    Number of shares     Ascribed value  
           
November 30, 2011   200     27,280  
Issued pursuant to Plan of Arrangement   46,577,878     64,496  
Issued pursuant to employment agreement   76,005     316  
Issued on exercise of NovaGold Arrangement Options   10,986     76  
November 30, 2012   46,665,069     92,168  
Issued on vesting of NovaGold Performance and Deferred Share Units   16,586     33  
Issued on exercise of NovaGold Warrants   6,088,262     11,996  
Issued on exercise of NovaGold Arrangement Options   1,184     11  
May 31, 2013 – issued and outstanding   52,771,101     104,208  
Schedule of Stock Options, Valuation Assumptions [Table Text Block]
    Six months ended  
    May 31, 2013  
Average risk-free interest rate   1.1 - 1.2%  
Exercise price   CDN$1.97 - 2.00  
Expected life   3.0 years  
Expected volatility   56.2 - 57.7%  
Expected dividends   nil  
Schedule of Stock Options Activity [Table Text Block]
          May 31, 2013  
          Weighted average  
          exercise price  
    Number of options      
Balance – beginning of period   6,064,994     2.98  
Granted   35,000     1.91  
Forfeited   (159,998 )   3.00  
Balance – end of period   5,939,996     2.97  
Schedule of Disclosure of Stock Options Outstanding [Table Text Block]
          Stock options - outstanding           Stock options - exercisable        
                Weighted           Weighted  
    Number of     Weighted     average     Number of     average  
    outstanding     average years     exercise price     exercisable     exercise price  
Range of price   options     to expiry     $     options     $  
$1.71 to $2.99   135,000     4.28     1.76     6,666     1.90  
$3.00 to $3.99   5,804,996     3.93     3.00     4,564,988     3.00  
    5,939,996     3.93     2.97     4,571,654     3.00  
Schedule of NovaGold Arrangement Options Activity [Table Text Block]
          May 31, 2013  
          Weighted average  
          exercise price  
    Number of options     $  
Balance – beginning of period   2,076,541     4.05  
Exercised   (3,822 )   1.26  
Expired   (67,582 )   1.85  
Forfeited   (60,958 )   4.68  
Balance – end of period   1,944,179     4.11  
Schedule of NovaGold Arrangement Stock Options Outstanding [Table Text Block]
          Stock options - outstanding           Stock options - exercisable        
                Weighted           Weighted  
    Number of     Weighted     average     Number of     average  
    outstanding     average years     exercise price     exercisable     exercise price  
Range of price   options     to expiry     $     options     $  
$0.52 to $1.99   277,827     0.56     1.13     277,827     1.13  
$2.00 to $3.99   751,909     1.24     2.98     751,909     2.98  
$4.00 to $5.99   603,405     3.42     5.19     455,757     5.26  
$6.00 to $7.99   286,039     2.62     7.30     283,260     7.31  
$8.00 to $8.48   24,999     4.05     8.39     24,999     8.39  
    1,944,179     2.06     4.11     1,793,752     4.03  
Schedule of Unit Plans and Changes Activity [Table Text Block]
          May 31, 2013  
    Number of RSUs     Number of DSUs  
Balance – beginning of period   -     -  
Granted   295,500     750,000  
Forfeited   (12,000 )   -  
Balance – end of period   283,500     750,000