Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Intangible Assets [Line Items]
Amortization of intangible assets		$ 11,325	$ 5,532	$ 23,151	$ 16,592
Intangible assets subject to amortization:
Gross Carrying Amount		297,752		297,752		$ 163,027
Accumulated Amortization		113,829		113,829		90,743
Net Carrying Amount		183,923		183,923		72,284
Intangible assets not subject to amortization:
Trademarks, Carrying Amount		245,698		245,698		178,325
Goodwill, Carrying Amount		875,714		875,714		512,060
Intangible Assets, Gross (Excluding Goodwill)		543,450		543,450		341,352
Total
Identifiable intangible assets, net		429,621		429,621		250,609
Customer relations
Intangible assets subject to amortization:
Gross Carrying Amount		197,230		197,230		101,141
Accumulated Amortization		67,934		67,934		53,434
Net Carrying Amount		129,296		$ 129,296		47,707
Customer relations | Minimum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				2 years
Customer relations | Maximum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				10 years
Contractor Relations [Member]
Intangible assets subject to amortization:
Gross Carrying Amount		69,806		$ 69,806		39,332
Accumulated Amortization		37,314		37,314		32,021
Net Carrying Amount		32,492		$ 32,492		7,311
Contractor Relations [Member] | Minimum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				2 years
Contractor Relations [Member] | Maximum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				5 years
Non-compete agreements
Intangible assets subject to amortization:
Gross Carrying Amount		10,916		$ 10,916		3,654
Accumulated Amortization		2,755		2,755		1,922
Net Carrying Amount		8,161		$ 8,161		1,732
Non-compete agreements | Minimum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				2 years
Non-compete agreements | Maximum [Member]
Intangible Assets [Line Items]
Estimated Useful Life				7 years
Computer Software, Intangible Asset [Member]
Intangible Assets [Line Items]
Estimated Useful Life				6 years
Intangible assets subject to amortization:
Gross Carrying Amount		18,900		$ 18,900		18,900
Accumulated Amortization		5,729		5,729		3,366
Net Carrying Amount		13,171		$ 13,171		$ 15,534
Contract-Based Intangible Assets [Member]
Intangible Assets [Line Items]
Estimated Useful Life				5 years
Intangible assets subject to amortization:
Gross Carrying Amount	[1]	900		$ 900
Accumulated Amortization	[1]	97		97
Net Carrying Amount	[1]	$ 803		$ 803

[1] (1) The favorable contracts intangible asset pertains to operating leases which are amortized as rent expense and included in SG&A expenses in the accompanying condensed consolidated statements of operations and comprehensive income. Expense associated with this favorable contracts intangible asset is not significant.