Goodwill and Other Long-Lived Assets (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 165,451	$ 147,685
Accumulated Amortization	(64,512)	(59,510)
Total intangible assets	100,939	88,175
Non-contractual customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	117,689	101,056
Accumulated Amortization	(48,249)	(45,295)
Total intangible assets	69,440	55,761
Covenants not-to-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,163	10,093
Accumulated Amortization	(4,818)	(4,422)
Total intangible assets	7,345	5,671
Favorable lease assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,451	9,576
Accumulated Amortization	(5,330)	(4,962)
Total intangible assets	4,121	4,614
Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	100	100
Accumulated Amortization	(36)	(11)
Total intangible assets	64	89
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,627	1,627
Accumulated Amortization	(670)	(414)
Total intangible assets	957	1,213
Franchise rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,730	11,730
Accumulated Amortization	(1,271)	(391)
Total intangible assets	10,459	11,339
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,691	13,503
Accumulated Amortization	(4,138)	(4,015)
Total intangible assets	$ 8,553	$ 9,488