Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
BASIC
Net income (loss) attributable to common shareholders	$ 26,405	$ (15,957)
Weighted-average number of common shares outstanding - basic	232,538,495	238,072,081
Income (loss) per common share:
Net income (loss) attributable to common shares outstanding - basic (in dollars per share)	$ 0.11	$ (0.07)
DILUTED
Impact of assumed conversions	$ 1	$ 0
Net income (loss) attributable to common shareholders	$ 26,406	$ (15,957)
Effect of dilutive securities:
Unvested share-based payment awards (in shares)	53,274	0
OP Units (in shares)	3,550,374	0
Weighted-average common shares outstanding - diluted (in shares)	236,142,143	238,072,081
Net income (loss) attributable to common shareholders - per common share diluted (in dollars per share)	$ 0.11	$ (0.07)

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