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SHARE CAPITAL AND CAPITAL IN EXCESS OF PAR VALUE | 12 Months Ended
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Dec. 31, 2019
SHARE CAPITAL AND CAPITAL IN EXCESS OF PAR VALUE |
SHARE CAPITAL AND CAPITAL IN EXCESS OF PAR VALUE | NOTE 5—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 January 1, 2017 |  | 37,701 | ​ | $ | 26,181 |  | 24,221 | ​ | $ | 16,820 |  | 83 | ​ | $ | (1,992) | ​ | $ | 646,768 | ​
Issuance of 3% stock dividend |  | 1,124 | ​ |  | 781 |  | 726 | ​ |  | 504 |  | 2 | ​ |  | — | ​ |  | 43,477 | ​
Conversion of Class B common shares to common shares |  | 56 | ​ |  | 39 |  | (56) | ​ |  | (39) |  | — | ​ |  | — | ​ |  | — | ​
Purchase and retirement of common shares |  | (921) | ​ |  | (640) |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | (33,493) | ​
Balance at December 31, 2017 |  | 37,960 | ​ |  | 26,361 |  | 24,891 | ​ |  | 17,285 |  | 85 | ​ |  | (1,992) | ​ |  | 656,752 | ​
Issuance of 3% stock dividend |  | 1,125 | ​ |  | 781 |  | 746 | ​ |  | 519 |  | 3 | ​ |  | — | ​ |  | 58,688 | ​
Conversion of Class B common shares to common shares |  | 53 | ​ |  | 37 |  | (53) | ​ |  | (37) |  | — | ​ |  | — | ​ |  | — | ​
Purchase and retirement of common shares |  | (594) | ​ |  | (412) |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | (18,905) | ​
Balance at December 31, 2018 |  | 38,544 | ​ | ​ | 26,767 |  | 25,584 | ​ | ​ | 17,767 |  | 88 | ​ | ​ | (1,992) | ​ | ​ | 696,535 | ​
Issuance of 3% stock dividend |  | 1,150 | ​ |  | 798 |  | 768 | ​ |  | 532 |  | 2 | ​ |  | — | ​ |  | 32,999 | ​
Conversion of Class B common shares to common shares |  | 65 | ​ |  | 45 |  | (65) | ​ |  | (45) |  | — | ​ |  | — | ​ |  | — | ​
Purchase and retirement of common shares |  | (923) | ​ |  | (641) |  | — | ​ |  | — |  | — | ​ |  | — | ​ |  | (33,475) | ​
Balance at December 31, 2019 |  | 38,836 | ​ | $ | 26,969 |  | 26,287 | ​ | $ | 18,254 |  | 90 | ​ | $ | (1,992) | ​ | $ | 696,059 | ​
​ Average shares outstanding and all per share amounts included in the financial statements and notes thereto have been adjusted retroactively to reflect annual three percent stock dividends. ​ While the Company does not have a formal or publicly announced Company common stock purchase program, the Company’s board of directors periodically authorizes a dollar amount for such share purchases. ​ Based upon this policy, shares were purchased and retired as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Total Number of Shares |  | ​ | ​ |
Year | ​ | Purchased (000’s) | ​ | Average Price Paid Per Share |
2019 |  | 923 | ​ | $ | 36.93 | ​
2018 |  | 594 | ​ | $ | 32.48 | ​
2017 |  | 921 | ​ | $ | 37.01 | ​
​

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- Definition Disclosure related to accounts comprising shareholders' equity. Includes: (1) balances of common stock, treasury stock and capital in excess of par value; (2) amount and nature of changes in separate accounts, including issuance of stock dividends and purchases, retirements and conversions of common stock. + References No definition available. + Details
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