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Condensed Consolidated Statements of Equity (Parenthetical) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Adoption of new accounting standard, tax |  |  | $ 237 | $ 2,869
Additional Paid-in Capital |  |  |  |
Income tax on stock option exercise and other shares issued to employees and directors | $ 0 | $ 0 | $ 0 | $ 0
Stock option exercises and other shares issued to employees and directors, shares |  |  | 764 | 120
Retained Earnings |  |  |  |
Dividends declared, per common share (in dollars per share) | $ 0.17 | $ 0.165 | $ 0.34 | $ 0.33

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