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Condensed Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Cash dividends paid on common shares, per share | $ 0.18 | $ 0.18
Issuance under equity compensation plans, shares | 37,948 | 35,485

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