Stockholders' Equity and Non-Controlling Interests - Non-Vested Shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Non-Vested Shares and Share Equivalents activity
Balance at the beginning of the period (in shares)	3,881,501
Granted (in shares)	1,708,935
Vested (in shares)	(1,756,400)
Forfeited (in shares)	(132,029)
Balance at the end of the period (in shares)	3,702,007	3,881,501
Weighted Average Grant Date Fair Value (per share)
Balance at the beginning of period (in dollars per share)	$ 17.26
Granted (in dollars per share)	22.14	$ 14.64	$ 24.01
Vested (in dollars per share)	18.44
Forfeited (in dollars per share)	18.99
Balance at the end of period (in dollars per share)	$ 18.90	$ 17.26
2017 Equity Plan
Non-Vested Shares and Share Equivalents activity
Balance at the beginning of the period (in shares)	1,594,605
Granted (in shares)	1,708,935
Vested (in shares)	(764,781)
Forfeited (in shares)	(132,029)
Balance at the end of the period (in shares)	2,406,730	1,594,605
2017 Manager Equity Plan
Non-Vested Shares and Share Equivalents activity
Balance at the beginning of the period (in shares)	2,286,896
Granted (in shares)	0
Vested (in shares)	(991,619)
Forfeited (in shares)	0
Balance at the end of the period (in shares)	1,295,277	2,286,896