Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Land	$ 19,768	$ 22,843
Buildings and Improvements	67,053	69,935
Leasehold Improvements and Signs	69,407	75,786
Fixtures and Equipment	266,761	247,565
Construction in Progress	10,863	4,568
Property, Plant and Equipment, Gross	450,310	442,333
Less: Accumulated Depreciation and Amortization	(242,623)	(231,062)
Property, Plant and Equipment, Net	207,687	211,271
Related Party
Property, Plant and Equipment [Line Items]
Assets Under Capital Leases:	4,032	10,573
Non-Related Party
Property, Plant and Equipment [Line Items]
Assets Under Capital Leases:	$ 12,426	$ 11,063