Goodwill and Other Long-Lived Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 145,012	$ 147,685
Accumulated Amortization	(62,099)	(59,510)
Total intangible assets	82,913	88,175
Noncontractual customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	99,522	101,056
Accumulated Amortization	(47,541)	(45,295)
Total intangible assets	51,981	55,761
Covenants not-to-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,260	10,093
Accumulated Amortization	(4,656)	(4,422)
Total intangible assets	5,604	5,671
Favorable lease asset [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,467	9,576
Accumulated Amortization	(5,078)	(4,962)
Total intangible assets	4,389	4,614
Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	100	100
Accumulated Amortization	(19)	(11)
Total intangible assets	81	89
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,627	1,627
Accumulated Amortization	(499)	(414)
Total intangible assets	1,128	1,213
Franchise rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,730	11,730
Accumulated Amortization	(684)	(391)
Total intangible assets	11,046	11,339
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,306	13,503
Accumulated Amortization	(3,622)	(4,015)
Total intangible assets	$ 8,684	$ 9,488