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Stock-based Employee Compensation, Stock Option Plans, and Deferred Compensation Plan for Directors - Narrative (Details) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Sep. 29, 2023
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] |  |  |  |
Deferred compensation (in shares) | 117,382 | 1,991 |  |
Shares due to exercise of employee stock options and issuance of directors' deferred stock |  | 183 | 699 |
Share-based payment arrangement, expense |  | $ 200,000 |  |
Future expense |  | $ 1,700,000 |  |
Exercised (in shares) |  | 0 | 0 |
Exercised |  | $ 0 |  |
Closing share price (in usd per share) |  |  |  | $ 38.49
Share-based compensation arrangement by share-based payment award, options, grants since inception (in shares) |  |  |  | 1,400,000
Weighted average remaining contractual life of the Company's outstanding options |  | 5 years 3 months 18 days |  |
Weighted average remaining contractual life of the Company's exercisable options |  | 3 years 10 months 24 days |  |
Granted (in shares) |  | 0 |  |
Common Stock |  |  |  |
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] |  |  |  |
Shares due to exercise of employee stock options and issuance of directors' deferred stock |  | 7,970 |  |
Employee Stock Option |  |  |  |
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] |  |  |  |
Expiration period |  | 10 years |  |
Employee Stock Option | Officer |  |  |  |
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items] |  |  |  |
Award vesting period |  | 4 years |  |

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