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.

No definition available.

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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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- Definition

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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- Definition

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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Income (Loss) Per Common Share (Details Textual) - shares	Nov. 08, 2021	Oct. 07, 2021	Dec. 31, 2021	Sep. 23, 2021
Common Class A
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of shares issued upon conversion	20,948,746	12,086,700
Series 6 Convertible Preferred Stock \| Stagwell Agency Holdings LLC
Antidilutive Securities Excluded from Computation of Earnings Per Share [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 \| The Goldman Sachs Group, Inc.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preference shares, outstanding (in shares)			73,849,000