Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Additional Information (Details)

v3.10.0.1
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Goodwill $ 510,160 $ 525,780
Net of accumulated impairment losses 797,600 797,600
Lease agreements    
Finite-Lived Intangible Assets [Line Items]    
Definite life intangibles 4,300 4,700
Franchise assets    
Finite-Lived Intangible Assets [Line Items]    
Franchise assets $ 67,800 $ 69,900