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Carrying Amount and Accumulated Amortization of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 303,751 | $ 302,654
Accumulated Amortization | (71,698) | (64,961)
Net Balance | 232,053 | 237,693
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 280,295 | 277,356
Accumulated Amortization | (55,152) | (49,410)
Net Balance | 225,143 | 227,946
Trademarks and tradenames |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 12,138 | 13,995
Accumulated Amortization | (5,333) | (4,383)
Net Balance | 6,805 | 9,612
Covenant not to compete |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 438 | 438
Accumulated Amortization | (333) | (303)
Net Balance | 105 | 135
Purchased contracts |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 10,880 | 10,865
Accumulated Amortization | (10,880) | (10,865)
Net Balance |  |

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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 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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