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Share Capital and Capital In Excess of Par Value (Tables) | 9 Months Ended
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Sep. 30, 2025
Share Capital and Capital In Excess of Par Value |
Schedule of changes in share capital and capital in excess of par value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Capital in
​ | ​ | ​ | ​ | ​ | ​ | ​ | Class B | ​ | ​ | ​ | ​ | ​ | ​ | Excess
​ | ​ | Common Stock | ​ | Common Stock | ​ | Treasury Stock | ​ | of Par
​ |  | Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount |  | Value
​ | ​ | (000’s) | ​ | ​ | ​ | ​ | (000’s) | ​ | ​ | ​ | ​ | (000’s) | ​ | ​ | ​ | ​ | ​ | ​
Balance at June 30,2025 | ​ | 41,808 | ​ | $ | 29,033 |  | 31,179 | ​ | $ | 21,652 |  | 108 | ​ | $ | (1,992) | ​ | $ | 847,308
Issuance of 3% stock dividend | ​ | — | ​ |  | — |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | —
Conversion of Class B common shares to common shares | ​ | 13 | ​ | ​ | 9 |  | (13) | ​ |  | (9) |  | — | ​ |  | — | ​ |  | —
Purchase and retirement of common shares and other | ​ | — | ​ | ​ | — |  | — | ​ | ​ | — |  | — | ​ | ​ | — | ​ | ​ | —
Balance at September 30, 2025 | ​ | 41,821 | ​ | $ | 29,042 |  | 31,166 | ​ | $ | 21,643 |  | 108 | ​ | $ | (1,992) | ​ | $ | 847,308
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at June 30,2024 | ​ | 41,213 | ​ | $ | 28,620 |  | 30,309 | ​ | $ | 21,048 |  | 105 | ​ | $ | (1,992) | ​ | $ | 802,253
Issuance of 3% stock dividend | ​ | — | ​ |  | — |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | —
Conversion of Class B common shares to common shares | ​ | 10 | ​ | ​ | 7 |  | (10) | ​ |  | (7) |  | — | ​ |  | — | ​ |  | —
Purchase and retirement of common shares and other | ​ | (77) | ​ | ​ | (53) |  | — | ​ | ​ | — |  | — | ​ | ​ | — | ​ | ​ | (2,166)
Balance at September 30, 2024 | ​ | 41,146 | ​ | $ | 28,574 |  | 30,299 | ​ | $ | 21,041 |  | 105 | ​ | $ | (1,992) | ​ | $ | 800,087
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at December 31, 2024 |  | 40,789 | ​ | $ | 28,325 |  | 30,286 | ​ | $ | 21,032 |  | 105 | ​ | $ | (1,992) | ​ | $ | 788,894
Issuance of 3% stock dividend |  | 1,213 | ​ |  | 842 |  | 908 | ​ |  | 630 |  | 3 | ​ |  | — | ​ |  | 64,816
Conversion of Class B common shares to common shares |  | 28 | ​ | ​ | 19 |  | (28) | ​ |  | (19) |  | — | ​ |  | — | ​ |  | —
Purchase and retirement of common shares and other |  | (209) | ​ | ​ | (144) |  | — | ​ | ​ | — |  | — | ​ | ​ | — | ​ | ​ | (6,402)
Balance at September 30, 2025 |  | 41,821 | ​ | $ | 29,042 |  | 31,166 | ​ | $ | 21,643 |  | 108 | ​ | $ | (1,992) | ​ | $ | 847,308
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at December 31, 2023 |  | 39,999 | ​ | $ | 27,777 |  | 29,445 | ​ | $ | 20,448 |  | 102 | ​ | $ | (1,992) | ​ | $ | 737,453
Issuance of 3% stock dividend |  | 1,196 | ​ |  | 830 |  | 882 | ​ |  | 613 |  | 3 | ​ |  | — | ​ |  | 64,800
Conversion of Class B common shares to common shares |  | 28 | ​ |  | 20 |  | (28) | ​ |  | (20) |  | — | ​ |  | — | ​ |  | —
Purchase and retirement of common shares and other |  | (77) | ​ | ​ | (53) |  | — | ​ | ​ | — |  | — | ​ | ​ | — | ​ | ​ | (2,166)
Balance at September 30, 2024 |  | 41,146 | ​ | $ | 28,574 |  | 30,299 | ​ | $ | 21,041 |  | 105 | ​ | $ | (1,992) | ​ | $ | 800,087
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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 + Details
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