Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Intangible Assets [Line Items]
Amortization of intangible assets		$ 6,957	$ 5,522	$ 11,826	$ 11,060
Intangible assets subject to amortization:
Gross Carrying Amount		297,640		297,640		$ 163,027
Accumulated Amortization		102,419		102,419		90,743
Net Carrying Amount		195,221		195,221		72,284
Intangible assets not subject to amortization:
Trademarks, Carrying Amount		245,664		245,664		178,325
Goodwill, Carrying Amount		878,862		878,862		512,060
Intangible Assets, Gross (Excluding Goodwill)		543,304		543,304		341,352
Total
Identifiable intangible assets, net		440,885		440,885		250,609
Customer relations
Intangible assets subject to amortization:
Gross Carrying Amount		197,139		197,139		101,141
Accumulated Amortization		60,661		60,661		53,434
Net Carrying Amount		136,478		$ 136,478		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		69,790		$ 69,790		39,332
Accumulated Amortization		34,490		34,490		32,021
Net Carrying Amount		35,300		$ 35,300		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		10,911		$ 10,911		3,654
Accumulated Amortization		2,305		2,305		1,922
Net Carrying Amount		8,606		$ 8,606		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		4,941		4,941		3,366
Net Carrying Amount		13,959		$ 13,959		$ 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]	22		22
Net Carrying Amount	[1]	$ 878		$ 878

[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.