Equity - Change in Net Income Attributable to Common Shareholders (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Equity [Abstract]
Net loss attributable to common stockholders	$ (6,977)	$ (8,204)	$ (7,523)	$ (16,502)
Increase in additional paid-in capital for the conversion of OP Units into common stock	914	2,419	7,755	24,153
Change from net income (loss) attributable to common stockholders and transfers from non-controlling interests	$ (6,063)	$ (5,785)	$ 232	$ 7,651