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Business Combinations - Estimates of Acquired Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013
Customer Relationships [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Fair Value | $ 1,007 | $ 826
Weighted Average Estimated Useful Life (yrs) | 10 years | 10 years
Trademarks and Trade Names [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Fair Value | 399 | 280
Weighted Average Estimated Useful Life (yrs) | 15 years | 15 years
Non-competition Agreements [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Estimated Fair Value | $ 155 | $ 0
Weighted Average Estimated Useful Life (yrs) | 5 years | 0 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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