Noncontrolling interest - Summary of ownership interests in EWC Ventures LLC on equity (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 01, 2023	Mar. 26, 2022
Minority Interest [Line Items]
Net income (loss) attributable to European Wax Center, Inc.	$ (508)	$ 1,885
Increase (decrease) in additional-paid-in-capital as a result of equity allocations to the noncontrolling interest	12,657	(1,149)
Net increase in equity of European Wax Center, Inc. due to equity interest transactions with noncontrolling interests	$ 12,149	$ 736

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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