Goodwill and Other Intangibles (Amortizable Intangibles) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortizable Intangibles
Amortizable intangible assets, cost	$ 32,802	$ 50,397
Amortizable intangible assets, accumulated amortization expense	(20,400)	(35,489)
Net amortizable intangible assets	12,402	14,908
Favorable Leases [Member]
Amortizable Intangibles
Amortizable intangible assets, cost	32,070	49,780
Amortizable intangible assets, accumulated amortization expense	(19,991)	(35,145)
Net amortizable intangible assets	12,079	14,635
Noncompete Agreements [Member]
Amortizable Intangibles
Amortizable intangible assets, cost	732	617
Amortizable intangible assets, accumulated amortization expense	(409)	(344)
Net amortizable intangible assets	323	273
Unfavorable Leases [Member]
Amortizable Intangibles
Amortizable intangibles, cost	28,580	49,200
Amortizable intangibles, accumulated amortization benefit	22,415	40,263
Net amortizable intangibles	$ 6,165	$ 8,937