Other Intangible Assets - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization Expense 2018	$ 10,000
Amortization Expense 2019	10,000
Amortization Expense 2020	10,000
Amortization Expense 2021	10,000
Amortization Expense 2022	$ 10,000
Weighted average life of intangible assets subject to amortization	20 years	20 years
Gross	$ 202,300	$ 200,000
Accumulated Amortization	(101,000)	(91,000)
Net	101,300	109,000
Impairment of intangible assets, indefinite-lived (excluding goodwill)	173,400
Income tax benefit	(94,835)	55,130	$ 63,726
Franchising rights
Finite-Lived Intangible Assets [Line Items]
Gross	200,000	200,000
Accumulated Amortization	(101,000)	(91,000)
Net	99,000	109,000
Leaseholds
Finite-Lived Intangible Assets [Line Items]
Gross	2,300	0
Accumulated Amortization	0	0
Net	2,300	$ 0
Not Subject to Amortization | Tradename
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets, indefinite-lived (excluding goodwill)	173,400
Income tax benefit	$ 65,100