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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Cumulative effect of change in accounting principle tax |  |  | $ 925 |
RETAINED EARNINGS [Member] |  |  |  |
Dividend on common stock | $ 0.34 | $ 0.32 | $ 0.68 | $ 0.64

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