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Reconciliation of Beginning and Ending Fair Value Measurements of Level Three Contingent Earnout Arrangement Related to Acquisition (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2017 | Jun. 30, 2018
Activity: |  |
Purchase price adjustment - IPI | $ (500) |
Fair Value, Inputs, Level 3 | EpiWorks and IPI |  |
Business Acquisition Contingent Consideration [Line Items] |  |
Balance - beginning of period |  | $ 5,795
Activity: |  |
Net put option |  | 2,233
Balance - end of period |  | 7,429
Fair Value, Inputs, Level 3 | EpiWorks and IPI | Other Expense, (Income) |  |
Activity: |  |
Changes in fair value recorded in other expense (income), net |  | (564)
Fair Value, Inputs, Level 3 | IPI |  |
Activity: |  |
Purchase price adjustment - IPI |  | $ (35)

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