CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Statement Of Stockholders Equity [Abstract] | |||
| Dividends paid to stockholders, per share | $ 1.28 | $ 1.16 | $ 1.08 |
| Gain realized on available-for-sale securities, taxes | $ 1,180 | ||
| New accounting pronouncement or change in accounting principle, effect of change on income taxes | $ 13,079 | ||
| X | ||||||||||
- Definition New accounting pronouncement or change in accounting principle, effect of change on income taxes. No definition available.
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| X | ||||||||||
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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