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Leases - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Leases [Line Items] |  |  |
Rent expense for noncancelable operating leases | $ 14.1 | $ 12.5 | $ 9.8
Minimum [Member] |  |  |
Leases [Line Items] |  |  |
Lease renewable period, maximum (in years) | 1 year |  |
Maximum [Member] |  |  |
Leases [Line Items] |  |  |
Lease renewable period, maximum (in years) | 5 years |  |

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- Definition Leases [Line Items] + References No definition available. + Details
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Details
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- Details
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