Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Common stock, shares outstanding (in shares)	181,440,051	135,966,013
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	181,440,051	135,966,013
Partners' Capital, Number of Units, Par Value and Other Disclosures [Abstract]
General Partner units issued (in units)		135,966,013
General Partner units outstanding (in units)		135,966,013
Limited Partner units issued (in units)		3,436,207
Limited Partner units outstanding (in units)		3,436,207
Operating Partnership
Partners' Capital, Number of Units, Par Value and Other Disclosures [Abstract]
General Partner units issued (in units)	181,440,051
General Partner units outstanding (in units)	181,440,051
Limited Partner units issued (in units)	5,364,632
Limited Partner units outstanding (in units)	5,364,632