Schedule of NovaGold Arrangement Options Activity (Details) (USD $)	6 Months Ended	12 Months Ended
	May 31, 2013	Nov. 30, 2012
Balance - Beginning of Period, Number of stock Options	6,064,994
Balance - Beginning of Period, Weighted average exercise price	$ 2.98
Stock options exercised	1,184	10,986
Stock options, weighted average exercise price, options exercised	$ 0.72
Stock options, number of options forfeited during the period	(159,998)
Stock options, weighted average exercise price of forfeitures	$ 3.00
Balance - End of Period, Number of stock options	5,939,996	6,064,994
Balance - End of Period, Weighted average exercise price	$ 2.97	$ 2.98
NovaGold Arrangement Options [Member]
Balance - Beginning of Period, Number of stock Options	2,076,541
Balance - Beginning of Period, Weighted average exercise price	$ 4.05
Stock options exercised	(3,822)
Stock options, weighted average exercise price, options exercised	$ 1.26
Stock options, number of options expired	(67,582)
Stock options, weighted average exercise price, stock options expired	$ 1.85
Stock options, number of options forfeited during the period	(60,958)
Stock options, weighted average exercise price of forfeitures	$ 4.68
Balance - End of Period, Number of stock options	1,944,179
Balance - End of Period, Weighted average exercise price	$ 4.11