Common Stock, Voting Rights, Number of Votes per Share

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- Definition

Preferred Stock, Conversion Price

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Preferred Stock, Premium Percentage

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Preferred Stock, Threshold Trading Days

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Aggregate number of common shares reserved for future issuance.

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Face amount or stated value per share of common stock.

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

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for 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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Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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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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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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

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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.

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

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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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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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Number of shares of stock issued during the period pursuant to acquisitions.

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Number of stock bought back by the entity at the exercise price or redemption price.

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Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

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Share Capital - Narrative (Details ) $ / shares in Units, $ in Thousands					1 Months Ended	12 Months Ended
	Nov. 08, 2021 shares	Oct. 07, 2021 shares	Aug. 04, 2021 USD ($) shares	Aug. 02, 2021 shares	Feb. 28, 2022 shares	Dec. 31, 2021 USD ($) vote tradingDay $ / shares shares	Dec. 31, 2020 USD ($) $ / shares	Sep. 23, 2021 shares
Share Capital [Line Items]
Preferred stock premium percentage						125.00%
Preferred stock conversion price (in dollars per share) \| $ / shares						$ 5.00
Consecutive trading days \| tradingDay						30
Common stock reserved for future issuance (in shares)						2,838,628
Excess tax benefit from stock-based compensation \| $						$ 5,289
Performance-Based Awards
Share Capital [Line Items]
Weighted average remaining contractual life						2 years 4 months 13 days
Grant date fair value of options granted (in dollars per share) \| $ / shares						$ 8.68	$ 0
Award vesting period						3 years
Unrecognized compensation expense of awards \| $						$ 8,221
Unrecognized compensation expense period for recognition						2 years 4 months 13 days
Restricted Stock And Restricted Stock Units
Share Capital [Line Items]
Fair value of vested awards \| $						$ 1,527
Time-Based Awards
Share Capital [Line Items]
Weighted average remaining contractual life						4 months 13 days
Grant date fair value of options granted (in dollars per share) \| $ / shares						$ 5.49	$ 0
Award vesting period						3 years
Expiration period						3 years
Unrecognized compensation expense of awards \| $							$ 15,376
Unrecognized compensation expense period for recognition							4 months 13 days
SARs
Share Capital [Line Items]
Weighted average remaining contractual life						1 year 1 month 24 days
Grant date fair value of options granted (in dollars per share) \| $ / shares						$ 2.79	$ 0
Risk free interest rate						1.00%
Dividend yield						0.00%
Expiration period						5 years
Shares vested and exercisable						1,950,000
Aggregate intrinsic value of awards outstanding \| $						$ 19,677
Unrecognized compensation expense of awards \| $						$ 4,639
Unrecognized compensation expense period for recognition						1 year 1 month 24 days
SARs \| Minimum
Share Capital [Line Items]
Grant date fair value of options granted (in dollars per share) \| $ / shares						$ 2.20
Expected life						2 years 9 months 18 days
Expected volatility rate						35.50%
Award vesting period						1 year
SARs \| Maximum
Share Capital [Line Items]
Grant date fair value of options granted (in dollars per share) \| $ / shares						$ 3.66
Expected life						4 years
Expected volatility rate						38.10%
Award vesting period						3 years
Other Awards
Share Capital [Line Items]
Unrecognized compensation expense of awards \| $						$ 36,418
Common Class A
Share Capital [Line Items]
Common stock shares authorized						1,000,000,000
Common stock shares issued						118,247,820
Common stock shares outstanding						118,247,820
Common stock, voting rights, number of votes per share \| vote						1
Common stock, par value per share (in dollars per share) \| $ / shares						$ 0.001
Number of shares issued upon conversion	20,948,746	12,086,700
Common Class A \| Subsequent Event [Member]
Share Capital [Line Items]
Number of shares issued upon conversion					15,155,141
Common Class B
Share Capital [Line Items]
Common stock shares authorized						5,000
Common stock shares issued						3,946
Common stock shares outstanding						3,946
Common stock, voting rights, number of votes per share \| vote						20
Common stock, par value per share (in dollars per share) \| $ / shares						$ 0.00
Common Class C
Share Capital [Line Items]
Common stock shares authorized						250,000,000
Common stock shares issued						179,970,051.000
Common stock shares outstanding						179,970,051.000
Series 6 Convertible Preferred Stock
Share Capital [Line Items]
Preferred stock, par value per share (in dollars per share) \| $ / shares						$ 0.001
Series 6 Convertible Preferred Stock \| Stagwell Agency Holdings LLC
Share Capital [Line Items]
Preference shares, outstanding (in shares)						50,000,000		50,000,000
Preferred stock shares issued (in shares)								50,000,000
Series 8 Preferred Stock
Share Capital [Line Items]
Preferred stock, par value per share (in dollars per share) \| $ / shares						$ 0.001
Preferred stock liquidation value \| $			$ 30,000
Stock redeemed during period \| $			$ 25,000
Shares redeemed during period			21,151,000
Series 8 Preferred Stock \| The Goldman Sachs Group, Inc.
Share Capital [Line Items]
Preference shares, outstanding (in shares)						73,849,000
MDC \| Common Class C \| Stagwell Media
Share Capital [Line Items]
Stock issued in acquisitions (in shares)				179,970,051