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Share-Based Compensation and Benefit Plans - Additional Information (Detail) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Feb. 07, 2023 USD ($) shares | Oct. 15, 2022 USD ($) shares | Dec. 31, 2022 USD ($) Age $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Options of common stock outstanding | shares |  |  | 559,625 | 602,488 |
Income tax benefit |  |  | $ 125,717 | $ 128,797 | $ 76,623
Payment, tax withholding, share-based payment arrangement |  |  | 87,107 | 1,092 | 2,299
Common stock contribution to 401(k) plan |  |  | 6,746 | 5,154 | 4,543
Current federal tax expense (benefit) |  |  | $ 71,475 | $ 91,162 | $ 58,895
Employee Stock Purchase Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Aggregate shares of common stock that remained available for grant in connection with the 2014 Plan | shares |  |  | 1,500,000 |  |
Shares reserved for future grant | shares |  |  | 443,479 |  |
Number of days of service required for an employee to purchase shares |  |  | 90 days |  |
Discount to employees to purchase shares |  |  | 5.00% |  |
Shares purchased under ESPP | shares |  |  | 4,101 | 3,501 | 5,121
Average price of the shares purchased by employees | $ / shares |  |  | $ 262.57 | $ 239.11 | $ 171.89
Additional shares issued resulting from cash dividends reinvested in common stock | shares |  |  | 3,365 | 2,962 | 3,964
Net proceeds from shares purchased under ESPP |  |  | $ 1,997 | $ 1,676 | $ 1,649
Class B Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares issued, value, share-Based payment arrangement | $ 200,000 |  |  |  |
Shares Issued, shares, share-Based payment arrangement | shares | 632 |  |  |  |
2014 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Options of common stock outstanding | shares |  |  | 361,075 |  |
2014 Plan | Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Years in which options plan vest |  |  | 2 years |  |
2014 Plan | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Years in which options plan vest |  |  | 4 years |  |
401(k) Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock contribution to 401(k) Plan, shares | shares |  |  | 21,560 | 22,752 | 25,216
Common stock contribution to 401(k) plan |  |  | $ 6,746 | $ 5,154 | $ 4,543
2021 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percent of market price that share-based compensation awards are granted at |  |  | 100.00% |  |
Aggregate shares of common stock that remained available for grant in connection with the 2014 Plan | shares |  |  | 2,500,000 |  |
Shares reserved for future grant | shares |  |  | 2,502,966 |  |
Contractual term of stock option awards |  |  | 5 years |  |
2021 Plan | Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Years in which options plan vest |  |  | 2 years |  |
2021 Plan | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Years in which options plan vest |  |  | 4 years |  |
2021 Plan | Common and Class B Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Aggregate shares of common stock that remained available for grant in connection with the 2014 Plan | shares |  |  | 7,327 |  |
Shares awarded under the plan, net of cancellations | shares |  |  | 4,361 |  |
Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted-average grant date fair value of restricted stock | $ / shares |  |  | $ 290.55 | $ 254.73 | $ 193.89
Market value of vested shares |  |  | $ 271,781 | $ 3,646 | $ 7,354
Unrecognized share-based compensation expense |  |  | $ 193,089 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 11 years 8 months 12 days |  |
Number of shares vested | shares |  |  | 1,000,459 |  |
Restricted Stock | Chief Executive Officer [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 54,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation agreement |  |  | 7 years |  |
Restricted stock obligated to issue in connection with incentive compensation agreement | shares |  |  | 39,602 |  |
Restricted Stock | Chief Executive Officer [Member] | Share-based Compensation Award, Tranche One |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 21,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 4 years |  |
Age of Chief Executive Officer when restricted stock vests | Age |  |  | 86 |  |
Restricted Stock | Chief Executive Officer [Member] | Share-based Compensation Award, Tranche Two |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 24,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 6 years |  |
Age of Chief Executive Officer when restricted stock vests | Age |  |  | 88 |  |
Restricted Stock | Chief Executive Officer [Member] | Share-based Compensation Award, Tranche Three |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 9,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 7 years |  |
Age of Chief Executive Officer when restricted stock vests | Age |  |  | 89 |  |
Restricted Stock | President |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 40,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation agreement |  |  | 21 years |  |
Restricted stock obligated to issue in connection with incentive compensation agreement | shares |  |  | 38,930 |  |
Restricted Stock | President | Share-based Compensation Award, Tranche One |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 39,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 21 years |  |
Age of president when restricted shares vests | Age |  |  | 62 |  |
Restricted Stock | President | Share-based Compensation Award, Tranche Two |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized share-based compensation expense |  |  | $ 1,000 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 23 years |  |
Age of president when restricted shares vests | Age |  |  | 64 |  |
Restricted Stock | Employee |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Age of employee when restricted stock vests | Age |  |  | 62 |  |
Restricted Stock | Various Key Leaders |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period related to shares obligated to issue in connection with incentive compensation agreement | shares |  |  | 15,000 |  |
Restricted Stock | Various Key Leaders | Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 5 years |  |
Restricted Stock | Various Key Leaders | Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 13 years |  |
Restricted Stock | Common and Class B Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares withheld as payment for tax withholdings related to share based compensation, shares | shares |  |  |  |  | 11,693
Payment, tax withholding, share-based payment arrangement |  |  |  |  | $ 2,299
Restricted Stock | Class B Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares withheld as payment for tax withholdings related to share based compensation, shares | shares |  |  | 320,468 | 3,858 |
Payment, tax withholding, share-based payment arrangement |  |  | $ 87,049 | $ 1,078 |
Restricted Stock | Class B Common Stock | Chief Executive Officer [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Market value of vested shares |  | $ 265,106 |  |  |
Shares withheld as payment for tax withholdings related to share based compensation, shares | shares |  | 311,408 |  |  |
Payment, tax withholding, share-based payment arrangement |  | $ 104,319 |  |  |
Cash benefit related to vesting of restricted stock previously granted to our CEO |  |  | 67,000 |  |
Current federal tax expense (benefit) |  |  | 49,000 |  |
Number of shares vested | shares |  | 975,622 |  |  |
Shares retained net of tax withholdings | shares |  | 664,214 |  |  |
Cash payment related to tax withholding for share based compensation |  | $ 19,700 |  |  |
Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Income tax benefit |  |  | 2,658 | 3,595 | 1,586
Total intrinsic value of stock options exercised |  |  | 13,046 | 16,903 | 8,753
Cash received from Common stock issued |  |  | 18,425 | 19,338 | 17,608
Unrecognized share-based compensation expense |  |  | $ 8,390 |  |
Vesting period related to restricted stock obligated to issue in connection with incentive compensation arrangement |  |  | 1 year 10 months 24 days |  |
Fair value of stock options vested |  |  | $ 2,721 | $ 2,621 | $ 2,177
Stock Options | Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares withheld as payment for tax withholdings related to share based compensation, shares | shares |  |  | 1,592 | 4,040 | 11,455
Payment, tax withholding, share-based payment arrangement |  |  | $ 438 | $ 1,179 | $ 2,343

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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