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CAPITAL STOCK - Fair Value Stock Options at Grant Date using Weighted-Average Assumption (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Historical volatility	52.00%	49.00%	35.00%
Expected term (years)	6 years 3 months 18 days	6 years 3 months 18 days	6 years
Risk-free interest rate	1.08%	0.45%	1.82%
Expected dividend yield	1.20%	2.67%	1.80%

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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