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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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No definition available.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Goodwill and Identifiable Assets (Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets [Line Items]
Amortization of intangible assets	$ 4,869us-gaap_AmortizationOfIntangibleAssets	$ 5,538us-gaap_AmortizationOfIntangibleAssets
Intangible assets subject to amortization:
Gross Carrying Amount	162,466		163,027
Accumulated Amortization	95,381		90,743
Net Carrying Amount	67,085us-gaap_FiniteLivedIntangibleAssetsNet		72,284us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets not subject to amortization:
Trademarks, Carrying Amount	178,325us-gaap_IndefiniteLivedTrademarks		178,325us-gaap_IndefiniteLivedTrademarks
Goodwill, Carrying Amount	510,164us-gaap_Goodwill		512,060us-gaap_Goodwill	514,426us-gaap_Goodwill
Intangible Assets, Gross (Excluding Goodwill)	340,791		341,352
Total
Identifiable intangible assets, net	245,410		250,609
Customer relations
Intangible assets subject to amortization:
Gross Carrying Amount	100,693		101,141
Accumulated Amortization	56,214		53,434
Net Carrying Amount	44,479		47,707
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	39,291		39,332
Accumulated Amortization	32,951		32,021
Net Carrying Amount	6,340		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	7 years
Non-compete agreements
Intangible assets subject to amortization:
Gross Carrying Amount	3,582		3,654
Accumulated Amortization	2,062		1,922
Net Carrying Amount	1,520		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
Accumulated Amortization	4,154		3,366
Net Carrying Amount	$ 14,746		$ 15,534