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Fair Value Measurements - Additional Information (Detail) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value, assets, level 3 transfers, amount | $ 0 | $ 0 |
Contingent and deferred consideration, maximum undiscounted payment | $ 31,000,000.0 |  | $ 33,200,000
Recurring [Member] | Maximum [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Earn-out period for contingent and deferred consideration | 7 years |  |
Recurring [Member] | Minimum [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Earn-out period for contingent and deferred consideration | 1 year |  |

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- Definition Business combination contingent deferred consideration arrangements range of outcomes value high. + References No definition available. + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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