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Summary of Total Purchase Price Allocated to Net Assets Acquired (Detail) - CaseStack, Inc. [Member] - USD ($) $ in Thousands |  | 1 Months Ended
--- | --- | ---
Dec. 03, 2018 | Apr. 30, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |
Cash paid | $ 249,389 | $ 700 | $ 248,700
Deferred purchase consideration | 3,469 |  |
Total consideration | $ 252,858 |  |

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