Acquisition of Business - Preliminary estimated fair values of the assets acquired and liabilities assumed (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 343,862	$ 345,314	$ 339,200	$ 697,400
Applebee's r3estaurants In North and South Carolina
Business Acquisition [Line Items]
Reacquired franchise rights	11,600	11,600
Measurement Period Adjustment, Reacquired Franchise Rights	0
Equipment and fixtures	10,000	10,000
Measurement Period Adjustment, Equipment and fixtures	0
Inventory	1,400	1,400
Measurement Period Adjustment, Inventory	0
Deferred income taxes	1,500	0
BMeasurement Period Adjustment, Deferred income tax	1,500
Total identifiable assets acquired	24,500	23,000
Measurement Period Adjustment, Total identifiable assets acquired	1,500
Above-market leaseholds, net	(6,500)	(6,500)
Measurement Period Adjustment, Above-market leaseholds, net	0
Other liabilities	(1,000)	(1,000)
Measurement Period Adjustment, Other liabilities	0
Net identifiable assets acquired	17,000	15,500
Measurement Period Adjustment, Net identifiable assets acquired	1,500
Goodwill	4,600	6,100
Measurement Period Adjustment, Goodwill	(1,500)
Consideration transferred	21,600	$ 21,600
Measurement Period Adjustment, Consideration transferred	$ 0