Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Restricted stock/Unit awards and LTIP Unit Awards issued	286,986
Limited Partners' Capital Account, Units Retired		33,333
Common Stock Dividends and Unit Distributions	$ 29,922	$ 27,107
Common Stock / Operating Partnership Units
Class of Stock [Line Items]
Conversion of Limited Partner Units to Common Stock / General Partner Units, Shares		410,781
Common Stock Dividends and Unit Distributions	$ 29,922

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Net number of non-option equity instruments granted to participants.

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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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