Schedule of Disclosure of Stock Options Outstanding (Details) (USD $)			9 Months Ended
	Aug. 31, 2013	Nov. 30, 2012	Aug. 31, 2013 Range 1 [Member]	Aug. 31, 2013 Range 2 [Member]
Exercise price lower range limit			$ 1.68	$ 2.00
Exercise price upper range limit			$ 1.99	$ 2.99
Number of outstanding options	5,906,664	6,064,994	131,666	5,774,998
Weighted average years to expiry	3 years 8 months 5 days		4 years 7 days	3 years 8 months 1 day
Weighted average exercise price options outstanding	$ 2.92	$ 2.93	$ 1.73	$ 2.95
Number of exercisable options	4,586,656		48,332	4,538,324
Weighted average exercise price	$ 2.94		$ 1.74	$ 2.95