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Employee Benefit Plans - Composition of Pension Plan Assets by Fair Value Level (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | $ 47,940 | $ 50,260 | $ 46,313
United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 36,471 | 37,260 |
U.K. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 11,469 | 13,000 |
Equities | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 12,951 | 14,636 |
Fixed Income | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 21,299 | 18,747 |
Cash and Other | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 2,221 | 3,877 |
Others | U.K. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 11,469 | 13,000 |
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 3,507 | 36,957 |
Level 1 | Equities | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 831 | 2,158 |
Level 1 | Fixed Income | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total |  | 18,747 |
Level 1 | Cash and Other | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 1,352 | 3,052 |
Level 1 | Others | U.K. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 1,324 | 13,000 |
Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 10,253 | 538 |
Level 3 | Equities | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 108 | 538 |
Level 3 | Others | U.K. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 10,145 |  |
Assets Measured at NAV |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 34,180 | 12,765 |
Assets Measured at NAV | Equities | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 12,012 | 11,940 |
Assets Measured at NAV | Fixed Income | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | 21,299 |  |
Assets Measured at NAV | Cash and Other | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total | $ 869 | $ 825 |

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