Derivative instruments and hedging activities - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Gain Fair Value Adjustments	$ 196,000	$ 0
Interest Rate Cap
Derivatives Fair Value [Line Items]
Gain on interest rate	138,000
Gain Fair Value Adjustments	196,000
Cash paid	$ 58,000
European Wax Center, Inc. and Subsidiaries
Derivatives Fair Value [Line Items]
Derivative Liability, Notional Amount			$ 175,000
European Wax Center, Inc. and Subsidiaries | Interest Rate Floor | London Interbank Offered Rate (LIBOR) [Member]
Derivatives Fair Value [Line Items]
Derivative, Variable Interest Rate			4.50%
European Wax Center, Inc. and Subsidiaries | Interest Rate Cap | London Interbank Offered Rate (LIBOR) [Member]
Derivatives Fair Value [Line Items]
Derivative, Cap Interest Rate			4.50%