Schedule of NovaGold Arrangement Stock Options Outstanding (Details) (USD $)					9 Months Ended
	Aug. 31, 2013	Nov. 30, 2012	Aug. 31, 2013 NovaGold Arrangement Options [Member]	Nov. 30, 2012 NovaGold Arrangement Options [Member]	Aug. 31, 2013 Range 1 [Member]	Aug. 31, 2013 Range 1 [Member] NovaGold Arrangement Options [Member]	Aug. 31, 2013 Range 2 [Member]	Aug. 31, 2013 Range 2 [Member] NovaGold Arrangement Options [Member]	Aug. 31, 2013 Range 3 [Member] NovaGold Arrangement Options [Member]	Aug. 31, 2013 Range 4 [Member] NovaGold Arrangement Options [Member]	Aug. 31, 2013 Range 5 [Member] NovaGold Arrangement Options [Member]
Exercise price lower range limit					$ 1.68	$ 0.51	$ 2.00	$ 2.00	$ 4.00	$ 6.00	$ 8.00
Exercise price upper range limit					$ 1.99	$ 1.99	$ 2.99	$ 3.99	$ 5.99	$ 7.99	$ 8.34
Number of outstanding options	5,906,664	6,064,994	1,935,114	2,076,541	131,666	277,827	5,774,998	766,949	582,761	282,578	24,999
Weighted average years to expiry	3 years 8 months 5 days		1 year 9 months 18 days		4 years 7 days	0 years 3 months 22 days	3 years 8 months 1 day	1 year 14 days	3 years 1 month 24 days	2 years 4 months 13 days	3 years 9 months 14 days
Weighted average exercise price options outstanding	$ 2.92	$ 2.93	$ 4.04	$ 3.98	$ 1.73	$ 1.11	$ 2.95	$ 2.96	$ 5.14	$ 7.19	$ 8.26
Number of exercisable options	4,586,656		1,784,687		48,332	277,827	4,538,324	755,838	446,224	279,799	24,999
Weighted average exercise price	$ 2.94		$ 3.96		$ 1.74	$ 1.11	$ 2.95	$ 2.94	$ 5.19	$ 7.20	$ 8.26