Equity - Change in Net Income Attributable to Common Shareholders (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Net income attributable to common stockholders	$ (16,712)	$ 49,445	$ 65,603
Increase in additional paid-in capital for the conversion of OP Units into common stock	0	0	0
Change from net income attributable to common stockholders and transfers from noncontrolling interests	13,458	77,185	136,055
Additional Paid-In Capital
Class of Stock [Line Items]
Increase in additional paid-in capital for the conversion of OP Units into common stock	$ 30,170	$ 27,740	$ 70,452