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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.

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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