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Earnings Per Share | 3 Months Ended
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Mar. 31, 2025
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Class A and Class B basic earnings per share and Class B diluted earnings per share are calculated under the two-class method. The two-class method allocates earnings to each class of stock based upon its dividend rights. Class B shares are convertible into Class A shares at a conversion ratio of 2,400 to 1. See Note 11, "Capital Stock". Class A diluted earnings per share is calculated under the if-converted method, which reflects the conversion of Class B shares to Class A shares. Diluted earnings per share calculations include the dilutive effect of assumed issuance of stock-based awards under compensation plans that have the option to be paid in stock using the treasury stock method. A reconciliation of the numerators and denominators used in the basic and diluted per-share computations is presented as follows for each class of common stock for the three months ended March 31:
|  | 2025 |  | 2024
(dollars in thousands, except per share data) |  | Allocated net income (numerator) |  | Weighted shares (denominator) |  | Per-share amount |  | Allocated net income (numerator) |  | Weighted shares (denominator) |  | Per-share amount
Class A – Basic EPS: |  |  |  |  |  |  |  |  |  |  |  |
Income available to Class A stockholders |  | $ | 137,284 |  |  | 46,188,903 |  |  | $ | 2.97 |  |  | $ | 123,532 |  |  | 46,189,014 |  |  | $ | 2.67 |
Dilutive effect of stock-based awards |  | 0 |  |  | 14,681 |  |  | — |  |  | 0 |  |  | 11,989 |  |  | — |
Assumed conversion of Class B shares |  | 1,133 |  |  | 6,100,800 |  |  | — |  |  | 1,020 |  |  | 6,100,800 |  |  | — |
Class A – Diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
Income available to Class A stockholders on Class A equivalent shares |  | $ | 138,417 |  |  | 52,304,384 |  |  | $ | 2.65 |  |  | $ | 124,552 |  |  | 52,301,803 |  |  | $ | 2.38 |
Class B – Basic and diluted EPS: |  |  |  |  |  |  |  |  |  |  |  |
Income available to Class B stockholders |  | $ | 1,133 |  |  | 2,542 |  |  | $ | 446 |  |  | $ | 1,020 |  |  | 2,542 |  |  | $ | 401 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
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