System Optimization Gains, Net Assets Held for Sale (Details) $ in Thousands	Sep. 27, 2020 USD ($) number_of_restaurants	Dec. 29, 2019 USD ($) number_of_restaurants
Long lived assets held for sale
Number of restaurants classified as held for sale \| number_of_restaurants	43	0
Net restaurant assets held for sale
Long lived assets held for sale
Assets held for sale	$ 20,178	$ 0
Other assets held for sale
Long lived assets held for sale
Assets held for sale	$ 2,817	$ 1,437

Amount classified as assets attributable to disposal group held for sale or disposed of.

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