Goodwill and Other Long-Lived Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 303,674	$ 295,549
Accumulated Amortization	(96,103)	(87,012)
Total	207,571	208,537
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	30,314	30,144
Accumulated Amortization	(8,974)	(7,713)
Total	21,340	22,431
Non-contractual customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	228,148	218,847
Accumulated Amortization	(71,469)	(62,331)
Total	156,679	156,516
Covenants not-to-compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,592	23,990
Accumulated Amortization	(8,776)	(7,580)
Total	16,816	16,410
Favorable lease assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,503	9,451
Accumulated Amortization	(3,008)	(5,855)
Total	3,495	3,596
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,377	1,377
Accumulated Amortization	(845)	(795)
Total	532	582
Client lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10	10
Accumulated Amortization	(1)	(1)
Total	9	9
Franchise rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,730	11,730
Accumulated Amortization	(3,030)	(2,737)
Total	$ 8,700	$ 8,993