Refranchisings and Acquisitions Refranchisings (Details) $ in Thousands	12 Months Ended
Dec. 26, 2018 USD ($)	Dec. 27, 2017 USD ($)	Dec. 28, 2016 USD ($)
Refranchisings [Abstract]
Restaurants sold to franchisees	8	4	6
(Gain) loss on sale of restaurants	$ 700	$ 300	$ (600)
Assets held for sale	$ 723	$ 0
Assets held for sale, description	three company owned restaurants and one piece of real estate

Refranchisings [Abstract]

No definition available.

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

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- Definition

A description of the assets to be disposed of and the facts and circumstances leading to the expected disposal, and the expected manner and timing of the disposal (generally no more than 12 months from the date of the balance sheet).

+ References

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- Definition

The number of franchises sold during the period when there are significant changes in franchisor-owned outlets or franchised outlets during the period.

+ References

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