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Share Capital - Summary of Non-Vested Options (Detail)	12 Months Ended
	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 CAD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted average grant date fair value, Granted		$ 5,730,000
Non-vested options [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share options, beginning of the year	2,079,153
Number of share subject to options, Vested	(997,936)
Number of share subject to options, Forfeited	(54,015)
Share options, end of the year	1,027,202	2,079,153
Weighted average grant date fair value, Granted	$ 5.53
Weighted average grant date fair value, Vested	5.37
Weighted average grant date fair value, Forfeited	5.60
Weighted average grant date fair value, Non-vested share options	$ 5.69

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

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The number of share options outstanding in a share-based payment arrangement.

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The number of share options forfeited in a share-based payment arrangement.

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The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

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