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Summary of Changes in Stockholders Equity (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Equity [Abstract] |  |
Dividends paid to stockholders, per share | $ 0.36 | $ 0.34
Cumulative effect of change in accounting principle, taxes |  | $ 6,054
Declaration Date | Feb. 21, 2020 | Feb. 22, 2019
Record Date | Mar. 06, 2020 | Mar. 08, 2019
Payable Date | Mar. 20, 2020 | Mar. 22, 2019
Amount per Share of Common Stock | $ 0.36 | $ 0.34
Total | $ 42,567 | $ 39,905

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- Definition Amount of the related income tax effect of a cumulative effect on retained earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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