Goodwill and Other Intangibles (Amortizable Intangibles) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Amortizable intangible assets, cost	$ 51,557	$ 51,627
Amortizable intangible assets, accumulated amortization expense	(32,891)	(29,013)
Net amortizable intangible assets	18,666	22,614
Favorable leases [Member]
Amortizable intangible assets, cost	50,910	50,910
Amortizable intangible assets, accumulated amortization expense	(32,463)	(28,566)
Net amortizable intangible assets	18,447	22,344
Noncompete Agreements [Member]
Amortizable intangible assets, cost	647	717
Amortizable intangible assets, accumulated amortization expense	(428)	(447)
Net amortizable intangible assets	219	270
Unfavorable leases [Member]
Amortizable intangibles, cost	49,380	49,380
Amortizable intangibles, accumulated amortization benefit	36,758	32,210
Net amortizable intangibles	$ 12,622	$ 17,170