Acquisitions and Dispositions - Intangible Assets Acquired (Details) - USD ($) $ in Thousands	Dec. 19, 2024	Oct. 01, 2024	Jan. 02, 2024
Team Epiphany
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 4,316
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			3 years
Team Epiphany \| Trade Names
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 549
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			3 years
Team Epiphany \| Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 3,767
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			3 years
Unicepta
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 36,833
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Unicepta \| Trade Names
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 5,417
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Unicepta \| Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 22,083
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years
Unicepta \| Other Intangible Assets
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 9,333
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Consulum
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 57,200
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		9 years
Consulum \| Trade Names
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 13,400
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Consulum \| Customer Relationships
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 43,800
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		7 years

Stagwell Inc 10-Q