Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Land		$ 22,843	$ 24,300
Buildings and Improvements		69,935	76,982
Leasehold Improvements and Signs		75,786	98,435
Fixtures and Equipment	[1]	247,565	223,382
Construction in Progress		4,568	3,853
Property, Plant and Equipment, Gross		442,333	448,588
Less: Accumulated Depreciation and Amortization		(231,062)	(222,752)
Property, Plant and Equipment, Net		211,271	225,836
Related Party
Property, Plant and Equipment [Line Items]
Assets Under Capital Leases:		10,573	10,573
Non-Related Party
Property, Plant and Equipment [Line Items]
Assets Under Capital Leases:		$ 11,063	$ 11,063

[1] Includes internal-use software development costs of $73.0 million and $60.7 million as of December 31, 2016 and 2015, respectively. Accumulated amortization of internal-use software development costs amounted to $31.1 million and $22.2 million as of December 31, 2016 and 2015, respectively.