Commitments and Contingencies - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 29, 2019 USD ($) Lease
Commitments And Contingencies [Line Items]
Payments made to date relative to contingent leases	$ 0
Wendy Operations [Member]
Commitments And Contingencies [Line Items]
Number of secondarily liable leases | Lease	5
Estimated amount of secondarily liable lease payments due	$ 771
Wendy Operations [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Remaining lease term	1 year
Wendy Operations [Member] | Maximum
Commitments And Contingencies [Line Items]
Remaining lease term	5 years
Winner Chicken and Biscuit Restaurant Operations [Member]
Commitments And Contingencies [Line Items]
Number of secondarily liable leases | Lease	1
Estimated amount of secondarily liable lease payments due	$ 370
Wendy's Southern California Restaurants [Member]
Commitments And Contingencies [Line Items]
Remaining lease term	1 year
Number of secondarily liable leases | Lease	1
Estimated amount of secondarily liable lease payments due	$ 21