Accounts payable and accrued liabilities (Narrative) (Details) (USD $)	May 31, 2014	Nov. 30, 2013
Accrued salaries and vacation	$ 857,000	$ 1,119,000
Expected minimum financing amount		10,000,000
Accrued and unpaid directors' meeting fees [Member]
Accrued liabilities	70,000
Services [Member]
Accrued liabilities		83,000
Officers [Member] | Accrued and Unpaid Bonuses [Member]
Accrued salaries and vacation		$ 699,000