Share Capital (Fair Value Assumptions) (Details)	12 Months Ended
Dec. 31, 2020 CAD ($) shares month $ / shares	Dec. 31, 2019 CAD ($) shares month $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Granted \| shares	876,425	965,876
Weighted average share price at grant date (CAD$) \| $ / shares	$ 7.66	$ 6.59
Expected dividend yield	1.02%	0.84%
Expected stock price volatility (based on historical volatility)	52.00%	54.00%
Weighted average per share fair value of stock options granted (CAD$) \| $	$ 3.27	$ 2.95
Expected dividend yield	1.02%	0.84%
Bottom of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Risk-free rate	1.32%	1.88%
Expected life of option (months)	42	36
Risk-free rate	1.32%	1.88%
Expected life of option (months)	42	36
Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Risk-free rate	1.68%	2.06%
Expected life of option (months)	84	84
Risk-free rate	1.68%	2.06%
Expected life of option (months)	84	84

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2020-01-01

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The option life of share options granted.

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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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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No definition available.

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- Definition

The percentage of an expected dividend used to calculate the fair value of share options granted.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45_b_ii&doctype=Standard
-URIDate 2020-01-01

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph a
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-URIDate 2020-01-01

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- Definition

The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

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