Other Intangible Assets - (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017 USD ($) Restaurant	Dec. 31, 2018 USD ($) Restaurant	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 2,400	$ 104,200	$ 101,400
Amortization expense 2019		11,100
Amortization expense 2020		10,500
Amortization expense 2021		10,500
Amortization expense 2022		10,500
Amortization expense 2023		$ 10,500
Weighted average life of intangible assets subject to amortization		18 years 6 months	20 years
Impairment			$ 173,400
Income tax (provision) benefit		$ 30,254	(85,559)	$ 56,849
Applebee's
Finite-Lived Intangible Assets [Line Items]
Number of restaurants | Restaurant		1,837
IHOP
Finite-Lived Intangible Assets [Line Items]
Number of restaurants | Restaurant		1,831
Entity Operated Units | Applebee's
Finite-Lived Intangible Assets [Line Items]
Number of restaurants | Restaurant		69
Franchised | Applebee's
Finite-Lived Intangible Assets [Line Items]
Number of restaurants | Restaurant		1,768
Franchised | IHOP
Finite-Lived Intangible Assets [Line Items]
Number of restaurants | Restaurant		1,669
Number of restaurants refranchised | Restaurant	9
Reacquired Franchise Rights | Subject to Amortization
Finite-Lived Intangible Assets [Line Items]
Additions		$ 11,600
Intangible assets, net		11,500	0	$ 0	$ 0
Tradename | Not Subject to Amortization
Finite-Lived Intangible Assets [Line Items]
Impairment			$ 173,400
Income tax (provision) benefit		$ 65,100