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Fair Value Measurements - Fair Value of Financial Assets and Liabilities (Detail) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
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Quoted Price in Active Markets For Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Financial assets remeasured | $ 0 | $ 0
Liabilities remeasured | 0 | 0
Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | 21,804,000 | 26,869,000
Fair value of financial assets, Total | 24,036,000 | 28,912,000
Fair value of other current liabilities | 32,186,000 | 50,275,000
Fair value of other non-current liabilities |  | 39,096,000
Fair value of financial liabilities, Total | 51,522,000 | 89,371,000
Fair Value, Measurements, Recurring | NQDC Plan liability |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 2,232,000 | 2,043,000
Fair value of other non-current liabilities | 19,336,000 | 23,929,000
Fair Value, Measurements, Recurring | Contingent consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 29,954,000 | 48,232,000
Fair value of other non-current liabilities |  | 15,167,000
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | 21,804,000 | 26,869,000
Fair value of financial assets, Total | 24,036,000 | 28,912,000
Fair value of other current liabilities | 2,232,000 | 2,043,000
Fair value of other non-current liabilities |  | 23,929,000
Fair value of financial liabilities, Total | 21,568,000 | 25,972,000
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | NQDC Plan liability |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 2,232,000 | 2,043,000
Fair value of other non-current liabilities | 19,336,000 | 23,929,000
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Contingent consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 0 | 0
Fair value of other non-current liabilities |  | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | 0 | 0
Fair value of financial assets, Total | 0 | 0
Fair value of other current liabilities | 29,954,000 | 48,232,000
Fair value of other non-current liabilities |  | 15,167,000
Fair value of financial liabilities, Total | 29,954,000 | 63,399,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | NQDC Plan liability |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 0 | 0
Fair value of other non-current liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Contingent consideration |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current liabilities | 29,954,000 | 48,232,000
Fair value of other non-current liabilities |  | 15,167,000
Fair Value, Measurements, Recurring | NQDC Plan assets |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current assets | 2,232,000 | 2,043,000
Fair value of other non-current assets | 19,336,000 | 23,929,000
Fair Value, Measurements, Recurring | NQDC Plan assets | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current assets | 2,232,000 | 2,043,000
Fair value of other non-current assets | 19,336,000 | 23,929,000
Fair Value, Measurements, Recurring | NQDC Plan assets | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other current assets | 0 | 0
Fair value of other non-current assets | 0 | 0
Fair Value, Measurements, Recurring | Restricted Investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | 2,468,000 | 2,940,000
Fair Value, Measurements, Recurring | Restricted Investments | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | 2,468,000 | 2,940,000
Fair Value, Measurements, Recurring | Restricted Investments | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of other non-current assets | $ 0 | $ 0

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