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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - Unaudited (Parenthetical) | 9 Months Ended
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Sep. 30, 2018 $ / shares shares
Stockholders' Equity Attributable to Parent |
Common dividends declared - per share (in dollars per share) | $ / shares | $ 2.00
Issuance of shares of common stock, common stock offering, net of expenses | 1,245,885
Issuance of shares of common stock, dividend reinvestment plan | 1,232
Withheld shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock | 23,824

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