Closure and Other Impairment Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Closure charges	$ 1,500	$ 2,000	$ 3,900
Long-lived tangible asset impairment	0	100	100
Total closure and impairment charges	1,487	2,107	$ 3,968
IHOP and Applebee's
Restructuring Cost and Reserve [Line Items]
Closure charges	500
IHOP
Restructuring Cost and Reserve [Line Items]
Closure charges	$ 1,800	$ 2,200