Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Aggregate number of common shares reserved for future issuance.

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Amount of noncash expense for share-based payment arrangement.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of noncash expense for option under share-based payment arrangement.

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Share capital - Additional information (Details) $ / shares in Units, $ in Thousands	3 Months Ended				12 Months Ended
	Feb. 29, 2020 $ / shares	Feb. 29, 2020 USD ($) $ / shares shares	Feb. 28, 2019 USD ($) $ / shares	Feb. 28, 2019 USD ($) $ / shares shares	Nov. 30, 2019 shares	Nov. 30, 2018 shares	Feb. 29, 2020 USD ($) $ / shares shares
Stock options granted, weighted average exercise price \| $ / shares	$ 3.02		$ 2.94
Stock options granted, weighted average exercise price \| $ / shares		$ 0.99		$ 1.08
Stock-based compensation \| $		$ (1,196)		$ (1,939)
Non-vested stock options outstanding \| shares							10,998,933
Weighted average exercise price options outstanding \| $ / shares							$ 1.27
Aggregate intrinsic value, vested options \| $			$ 13,000	13,000			$ 5,900
Aggregate intrinsic value, options exercised \| $		40		80
Share capital [Member]
Stock-based compensation \| $		0		0
Nonvested Options [Member]
Non-vested stock options outstanding \| shares							1,453,338
Weighted average exercise price options outstanding \| $ / shares	$ 2.21
Number of DSU's [Member]
Common stock committed for issuance \| shares							11,927
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares							1,988
Stock Compensation Plan [Member]
Stock-based compensation \| $		$ 40		$ 350
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period \| shares		212,501
Granted units \| shares					0	225,000
Approximations [Member] \| Nonvested Options [Member]
Stock option expense \| $		$ 950
New Employees [Member]
Stock options granted \| shares		2,050,000		2,430,000
Directors, Employees and Services Providers [Member]
Stock-based compensation \| $		$ 1,160		$ 1,590