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Goodwill and Other Intangible Assets, Net - Components of Goodwill and Other Intangible Assets, Net (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 384,697 | $ 375,122 | $ 317,434
Intangibles: |  |  |
Total intangibles | 140,593 | 143,488 |
Total goodwill and other intangibles assets | 525,290 | 518,610 |
Accumulated amortization: |  |  |
Total accumulated amortization | (56,207) | (49,039) |
Goodwill and other intangible assets, net | 469,083 | 469,571 |
Client lists [Member] |  |  |
Intangibles: |  |  |
Total intangibles | 132,637 | 134,987 |
Accumulated amortization: |  |  |
Total accumulated amortization | (51,016) | (44,293) |
Other intangibles [Member] |  |  |
Intangibles: |  |  |
Total intangibles | 7,956 | 8,501 |
Accumulated amortization: |  |  |
Total accumulated amortization | (5,191) | (4,746) |
Indefinite-lived Intangible Assets [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Goodwill | $ 384,697 | $ 375,122 |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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