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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
COMMON STOCK |  |  |  |
New common shares issued for exercise of stock options, shares |  | 13 | 29,653 | 27,597
CAPITAL SURPLUS |  |  |  |
New common shares issued for exercise of stock options, shares |  | 13 | 29,653 | 27,597
RETAINED EARNINGS |  |  |  |
Cash dividend declared per common share | $ 0.030 | $ 0.030 | $ 0.060 | $ 0.055

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