Revenues - (Deferred Revenue) (Details) $ in Thousands	Dec. 29, 2021 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 19,896
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-12-30
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 1,928
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-12-29
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 1,859
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-12-28
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 1,808
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-12-26
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 1,740
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 1,647
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-12-31
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred franchise revenue expected to be recognized	$ 10,914
Revenue, remaining performance obligation, expected timing of satisfaction, period