Goodwill and Other Intangibles (Amortizable Intangibles) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortizable Intangibles
Amortizable intangible assets, cost	$ 21,687	$ 24,351
Amortizable intangible assets, accumulated amortization expense	(13,243)	(14,959)
Net amortizable intangible assets	8,444	9,392
Favorable Leases [Member]
Amortizable Intangibles
Amortizable intangible assets, cost	18,930	22,500
Amortizable intangible assets, accumulated amortization expense	(12,564)	(14,495)
Net amortizable intangible assets	6,366	8,005
Non-compete Agreements [Member]
Amortizable Intangibles
Amortizable intangible assets, cost	2,757	1,851
Amortizable intangible assets, accumulated amortization expense	(679)	(464)
Net amortizable intangible assets	2,078	1,387
Unfavorable Leases [Member]
Amortizable Intangibles
Amortizable intangibles, cost	10,180	14,470
Amortizable intangibles, accumulated amortization benefit	8,486	11,853
Net amortizable intangibles	$ 1,694	$ 2,617