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SHARE CAPITAL AND CAPITAL IN EXCESS OF PAR VALUE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Changes in share capital and capital in excess of par value |  |  |
Balance at the beginning of the period | $ 768,797 |  |
Balance at the beginning of the period (in shares) | 96 |  |
Balance at the end of the period | $ 782,882 | $ 768,797 |
Balance at the end of the period (in shares) | 99 | 96 |
Total Number of Shares Purchased | 818 | 921 | 982
Average Price Paid Per Share (in dollars per share) | $ 38.98 | $ 32.76 | $ 32.59
Stock dividends (as a percent) | 3.00% | 3.00% | 3.00%
Common Stock. |  |  |
Changes in share capital and capital in excess of par value |  |  |
Balance at the beginning of the period | $ 27,322 | $ 27,134 | $ 26,969
Balance at the beginning of the period (in shares) | 39,344 | 39,073 | 38,836
Issuance of 3% stock dividend | $ 817 | $ 807 | $ 804
Issuance of 3% stock dividend (in shares) | 1,176 | 1,163 | 1,157
Conversion of Class B common shares to common shares | $ 13 | $ 20 | $ 43
Conversion of Class B common shares to common shares (in shares) | 19 | 29 | 62
Purchase and retirement of common shares | $ (568) | $ (639) | $ (682)
Purchase and retirement of common shares (in shares) | (818) | (921) | (982)
Balance at the end of the period | $ 27,584 | $ 27,322 | $ 27,134
Balance at the end of the period (in shares) | 39,721 | 39,344 | 39,073
Treasury Stock |  |  |
Changes in share capital and capital in excess of par value |  |  |
Balance at the beginning of the period | $ (1,992) | $ (1,992) | $ (1,992)
Balance at the beginning of the period (in shares) | 96 | 93 | 90
Issuance of 3% stock dividend (in shares) | 3 | 3 | 3
Balance at the end of the period | $ (1,992) | $ (1,992) | $ (1,992)
Balance at the end of the period (in shares) | 99 | 96 | 93
Capital in Excess of Par Value |  |  |
Changes in share capital and capital in excess of par value |  |  |
Balance at the beginning of the period | $ 709,880 | $ 706,930 | $ 696,059
Issuance of 3% stock dividend | 41,068 | 32,495 | 42,244
Purchase and retirement of common shares | (31,342) | (29,545) | (31,373)
Balance at the end of the period | 719,606 | 709,880 | 706,930
Class B Common Stock | Common Stock. |  |  |
Changes in share capital and capital in excess of par value |  |  |
Balance at the beginning of the period | $ 19,300 | $ 18,758 | $ 18,254
Balance at the beginning of the period (in shares) | 27,793 | 27,012 | 26,287
Issuance of 3% stock dividend | $ 579 | $ 562 | $ 547
Issuance of 3% stock dividend (in shares) | 833 | 810 | 787
Conversion of Class B common shares to common shares | $ (13) | $ (20) | $ (43)
Conversion of Class B common shares to common shares (in shares) | (19) | (29) | (62)
Balance at the end of the period | $ 19,866 | $ 19,300 | $ 18,758
Balance at the end of the period (in shares) | 28,607 | 27,793 | 27,012

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