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Share capital - Authorized unlimited common shares, no par value (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
Class of Stock [Line Items]
Unlimited common shares authorized	Unlimited	Unlimited
Common Stock, No Par Value	$ 0	$ 0
Share capital
Class of Stock [Line Items]
Beginning balance, Number of shares	144,137,850	140,427,761
Beginning balance, Ascribed value	$ 179,746	$ 177,971
Exercise of options, Number of shares	871,961	3,297,588	1,725,776
Exercise of options, Ascribed value	$ 1,074	$ 1,133
Restricted share units, Number of shares		412,501	412,501
Restricted share units, Ascribed value		$ 642
Ending balance, Number of shares	145,009,811	144,137,850	140,427,761
Ending balance, Ascribed value	$ 180,820	$ 179,746	$ 177,971

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- Definition

Represent the value of ascribed value common shares.

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Restricted Share Units

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- Definition

Amount of other increase (decrease) in additional paid in capital (APIC).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Face amount per share of no-par value common stock.

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- Definition

Indicates that the number of common shares permitted to be issued by an entity's charter and bylaws is unlimited. The acceptable value is "Unlimited".

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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Number of share options (or share units) exercised during the current period.

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