Cancellation of shares repurchased under normal course issuer bid.

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Compensation expense related to granting and vesting of share unit.

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Maximum daily repurchase in normal course issuer bid.

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Maximum percentage of shares approved in normal course issuer bid.

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Repurchases of shares under normal course issuer bid.

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Share based compensation arrangement by share based payment award options exercised in period fair value.

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Common share issued on vesting of share units, shares.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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 weighted average fair value at grant date for nonvested equity-based awards issued 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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The amount by which an asset or assets increased resulting from the transaction in which equity securities were issued to pay for goods or nonemployee services.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of non-vested options outstanding.

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Number of new stock issued during the period.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Share Capital - Additional Information (Detail)			12 Months Ended
Share Capital - Additional Information (Detail)	Jan. 04, 2019 shares	Nov. 08, 2017 shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2019 CAD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2018 CAD ($) $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized			100,000,000	100,000,000
Share based payment awards issued			0	0	0	0
Dividend yield			0.00%	0.00%
Compensation expense related to granting and vesting of share unit \| $			$ 737,548		$ 2,800,280
Number of shares authorized to repurchase		6,974,495
Maximum percentage of shares approved in normal course issuer bid		9.80%
Maximum daily repurchase in normal course issuer bid		14,875
Repurchase of shares			1,607,579	1,607,579	1,264,900	1,264,900
Total cost, including transaction fee			$ 4,754,295	$ 6,313,347	$ 3,784,733	$ 4,945,155
Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares excluded from diluted weighted average number of common shares calculation			502,529	502,529	221,979	221,979
Share units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares excluded from diluted weighted average number of common shares calculation			1,883,204	1,883,204	2,095,260	2,095,260
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common shares issued on vesting of share units, shares			325,875	325,875	364,000	364,000
Shares cancelled under normal course issuer bid	10,400				1,254,500	1,254,500
Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant			2,575,492	2,575,492
Options nonvested			500,000	500,000
Weighted average fair value of stock options granted \| (per share)			$ 1.43	$ 1.86
Dividend yield			0.00%	0.00%
Intrinsic value of options, exercised \| $			$ 2,067,497
Fair value of options, exercised \| $			306,798
Compensation expense \| $			$ 239,413		$ 468
Options [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options term			2 years	2 years
Stock options vesting period			18 months	18 months
Options [Member] \| Minimum [Member] \| Consultants Providing Investor Relations Activities [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options vesting period			12 months	12 months
Options [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options term			10 years	10 years
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of other equity instruments issued			482,679	482,679
Intrinsic value of share units, vested \| $			$ 1,038,456
Fair value of share units, vested \| $			$ 1,159,913
Time Based Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of other equity instruments issued			1,553,125	1,553,125	452,125	452,125
Weighted average exercise price of other equity instruments issued \| (per share)			$ 2.93	$ 3.81	$ 3.45	$ 4.71
Number of other equity instruments vested			325,875	325,875	364,000	364,000
Performance Based Share Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of other equity instruments issued					150,000	150,000
Weighted average exercise price of other equity instruments issued \| (per share)					$ 2.78	$ 3.79