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Goodwill (Details) $ in Thousands	3 Months Ended	12 Months Ended
Goodwill (Details) $ in Thousands	Sep. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) Restaurant	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Restaurant	Dec. 31, 2016 USD ($)
Goodwill [Line Items]
Goodwill		$ 343,862	$ 339,200	$ 345,314	$ 697,400
Gross		$ 702,100		$ 703,500
Goodwill, impairment loss	$ 358,200		358,200
Applebee's
Goodwill [Line Items]
Number of restaurants \| Restaurant		1,787
Goodwill, impairment loss		$ 358,200
Entity Operated Units \| Applebee's
Goodwill [Line Items]
Number of restaurants \| Restaurant		69		69
Goodwill		$ 4,600	0	$ 6,100	$ 0
Gross		$ 4,600		$ 6,100
Goodwill, impairment loss			$ 0