Consolidated Statements Of Equity (Parentheticals) - $ / shares	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common shares issued	0	4,778	0
Common share options exercised	78,972
Conversions and redemptions of operating partnership units	2	3	8
Cash distributions declared to equity holders per share	$ 3.08	$ 3.00	$ 7.25
Additional Paid-In Capital
Common share options exercised	8	11	45

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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