Sale of Sunward Investments Ltd (Schedule of Discontinued Operations of Sunward Investments) (Details) - USD ($) $ in Thousands	5 Months Ended	9 Months Ended	12 Months Ended
Nov. 30, 2015	Sep. 01, 2016	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Discontinued operations expense for the year			$ 0	$ 598	$ 398
Gain on sale of Sunward Investments Ltd.			0	(4,448)	0
(Income)/loss from discontinued operations for the year			$ 0	$ (3,850)	$ 398
Sunward Investment [Member]
Amortization	$ 63	$ 95
Foreign exchange loss	23	4
General and administrative	3	5
Mineral properties expense	309	460
Professional fees	0	34
Discontinued operations expense for the year	398	598
Gain on sale of Sunward Investments Ltd.	0	(4,448)
(Income)/loss from discontinued operations for the year	$ 398	$ (3,850)

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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount of depreciation and amortization expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of foreign currency translation gain (loss) in the disposal group, including discontinued operation, recognized in the statement of income as a result of the sale or complete or substantially complete liquidation of an investment in a foreign entity.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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