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Unaudited Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Nov. 30, 2019 | Nov. 30, 2018 | Nov. 30, 2019 | Nov. 30, 2018
Statement Of Stockholders Equity [Abstract] |  |  |  |
Deferred tax adjusted to pension | $ 74 | $ 83 | $ 226 | $ 252
Dividends paid per share | $ 0.225 | $ 0.225 | $ 0.675 | $ 0.650

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