Share Capital - Schedule of Information With Respect to Stock Options Outstanding and Exercisable (Detail)	12 Months Ended
Dec. 31, 2019 $ / shares shares	Dec. 31, 2019 $ / shares $ / shares shares	Dec. 31, 2018 $ / shares shares	Dec. 31, 2018 $ / shares $ / shares shares	Dec. 31, 2019 $ / shares shares	Dec. 31, 2018 $ / shares shares
Exercise Price Range One [Member]
Disclosure of Compensation Related Costs, Share based Payments [Abstract]
Exercise price \| (per share)	$ 0.46	$ 0.60	$ 0.44	$ 0.60
Exercise price \| (per share)	$ 0.57	$ 0.70	$ 0.51	$ 0.70
Number of options	504,687	504,687	1,344,687	1,344,687	504,687	1,344,687
Options outstanding Weighted average remaining contractual life (years)	4 years 18 days	4 years 18 days	5 years 18 days	5 years 18 days
Options outstanding Weighted average exercise price \| (per share)	$ 0.53	$ 0.53	$ 0.50	$ 0.50	$ 0.69	$ 0.69
Number of options	504,687	504,687	1,344,687	1,344,687	504,687	1,344,687
Options exercisable Weighted average exercise price ($CAD) \| (per share) \| (per share)	$ 0.53	$ 0.53	$ 0.50	$ 0.50	$ 0.69	$ 0.69
Exercise Price Range Two [Member]
Disclosure of Compensation Related Costs, Share based Payments [Abstract]
Exercise price \| (per share)	2.73	$ 3.56
Exercise price \| (per share)	$ 2.73	$ 3.56
Number of options	500,000	500,000			500,000
Options outstanding Weighted average remaining contractual life (years)	9 years 3 months 7 days	9 years 3 months 7 days
Options outstanding Weighted average exercise price \| (per share)	$ 2.73	$ 2.73			$ 3.56

Compensation Related Costs Share Based Payments Disclosure [Line Items]

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- Definition

Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. 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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. 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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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. 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 exercise price, at which grantee can acquire shares reserved for issuance, for 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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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. 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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