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Schedule of financial assets and liabilities that are measured and recognized at fair value (Details) - USD ($) $ in Thousands	Nov. 30, 2017	Nov. 30, 2016
Fair Value, Inputs, Level 1 [Member] \| Warrant [Member]
Investments, Fair Value Disclosure	$ 0	$ 0
Fair Value, Inputs, Level 1 [Member] \| Shares [Member]
Investments, Fair Value Disclosure	2,514	7,538
Fair Value, Inputs, Level 2 [Member] \| Warrant [Member]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] \| Shares [Member]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] \| Warrant [Member]
Investments, Fair Value Disclosure	2	297
Fair Value, Inputs, Level 3 [Member] \| Shares [Member]
Investments, Fair Value Disclosure	$ 0	$ 0

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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