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U.S. Employee Deferred Compensation and Stock Purchase Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2001 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 06, 2018
Employee Stock Ownership Plan E S O P Disclosures [Line Items] |  |  |  |  |
Percentage contribution, compensation |  | 100.00% |  |  |
Matching percentage, employee contribution |  | 5.00% |  |  |
Company's contributions amount |  | $ 2,507 | $ 2,409 | $ 2,273 |
Common stock under employee stock purchase plan, par value |  | $ 0.1 | $ 0.1 |  |
Shares of common stock purchased through the plan |  | 50,025 | 51,240 | 50,782 |
Employee Stock Purchase Plan |  |  |  |  |
Employee Stock Ownership Plan E S O P Disclosures [Line Items] |  |  |  |  |
Number of common stock shares under employee stock purchase plan | 1,000,000 |  |  |  |
Common stock under employee stock purchase plan, par value | $ 0.1 |  |  |  |
Employee stock purchase plan offering period |  | January 1 and July 1 of each year |  |  |
Employee stock purchase plan expiration date |  | Dec. 31, 2028 |  |  |
Commons stock plan available for sale under plan |  |  |  |  | 995,000
Available common stock under plan |  | 441,915 | 491,940 | 543,180 |

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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