Acquisitions - Estimated Fair Values of Identifiable Intangible Assets and Related Weighted Average Amortization (Detail) - Acquisitions 2017 $ in Thousands |
6 Months Ended |
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Jun. 30, 2017
USD ($)
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| Business Acquisition [Line Items] | |
| Estimated fair value at acquisition date | $ 7,053 |
| Weighted average amortization period at acquisition date | 5 years |
| Customer relationships | |
| Business Acquisition [Line Items] | |
| Estimated fair value at acquisition date | $ 6,625 |
| Weighted average amortization period at acquisition date | 5 years |
| Non-compete agreements | |
| Business Acquisition [Line Items] | |
| Estimated fair value at acquisition date | $ 428 |
| Weighted average amortization period at acquisition date | 5 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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