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Accounts Payable and Accrued Expenses - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2016 | Sep. 30, 2016 | Dec. 31, 2015
Accounts Payable And Accrued Expenses [Line Items] |  |  |
Earn-out liability settled | $ 3.2 |  |
Other Liabilities [Member] |  |  |
Accounts Payable And Accrued Expenses [Line Items] |  |  |
Non-current portion of earn-out liability |  | $ 9.7 | $ 17.9

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- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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