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Earnings Per Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 04, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022 | Jul. 31, 2019 | Jul. 19, 2019
Stock options, outstanding |  | 658,860 |  |  | 658,860 |  | 609,965 |  |
Stock options, weighted average exercise price |  | $ 80.53 |  |  | $ 80.53 |  | $ 71.74 |  |
Restricted stock units, outstanding |  | 492,937 |  |  | 492,937 |  | 531,034 |  |
Common stock excluded from calculation of diluted earnings per share |  | 456,315 | 325,685 |  | 400,909 | 306,400 |  |  |
Dilutive effect on shares of conversion premium |  | 700,941 | 676,166 |  | 796,601 | 1,779,041 |  |  |
Denominator for diluted earnings per share - adjusted weighted average shares used in computing net income per share - diluted |  | 56,858 | 56,721 |  | 56,932 | 57,842 |  |  |
Charges associated with convertible debt instruments, net of tax |  | $ 0 | $ 0 |  | $ 0 | $ 387 |  |  |
AccountingStandardsUpdate202006Member |  |  |  |  |  |  |  |  |
Denominator for diluted earnings per share - adjusted weighted average shares used in computing net income per share - diluted | 3,474,429 |  |  |  |  |  |  |  |
Charges associated with convertible debt instruments, net of tax |  |  |  | $ 400 |  |  |  |  |
0.375% Convertible Senior Notes due 2024 |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  | $ 287,500 | $ 287,500

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