Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 487,306	$ 509,592
Net of accumulated impairment losses	797,600	797,600
Lease agreements
Finite-Lived Intangible Assets [Line Items]
Definite life intangibles		4,000
Franchise assets
Finite-Lived Intangible Assets [Line Items]
Franchise assets	$ 64,300	$ 65,700