Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Intangible Assets [Line Items]
Amortization of intangible assets	$ 6,156	$ 5,275	$ 12,328	$ 10,654
Intangible assets subject to amortization:
Gross Carrying Amount	176,354		176,354		176,368
Accumulated Amortization	86,311		86,311		73,988
Net Carrying Amount	90,043		90,043		102,380
Intangible assets not subject to amortization:
Trademarks, Carrying Amount	186,061		186,061		186,075
Goodwill, Carrying Amount	574,951		574,951		574,948	496,158
Total
Gross Carrying Amount	937,366		937,366		937,391
Net Carrying Amount	851,055		851,055		863,403
Customer relations
Intangible assets subject to amortization:
Gross Carrying Amount	109,999		109,999		110,007
Accumulated Amortization	49,682		49,682		41,564
Net Carrying Amount	60,317		60,317		68,443
Customer relations | Minimum [Member]
Intangible Assets [Line Items]
Estimated Useful Life			3 months
Customer relations | Maximum [Member]
Intangible Assets [Line Items]
Estimated Useful Life			10 years
Contractor Relations [Member]
Intangible assets subject to amortization:
Gross Carrying Amount	43,595		43,595		43,598
Accumulated Amortization	33,074		33,074		30,737
Net Carrying Amount	10,521		10,521		12,861
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			7 years
Non-compete agreements
Intangible assets subject to amortization:
Gross Carrying Amount	3,860		3,860		3,863
Accumulated Amortization	1,716		1,716		1,424
Net Carrying Amount	2,144		2,144		2,439
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	1,839		1,839		263
Net Carrying Amount	$ 17,061		$ 17,061		$ 18,637