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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions | Jun. 30, 2019 | Jun. 30, 2018
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Prior Year Acquisitions |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Business acquisitions, contingent consideration |  | $ 5.4
CoAdna, Inc | Scenario Forecast |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Business acquisitions, contingent consideration | $ 85.0 |

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