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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity
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Common Stock
Increase (Decrease) in Stockholders' Equity
Dividends declared per share of common stock (dollars per share)	$ 0.01	$ 0.10
Dividends declared and paid per share of common stock (dollars per share)	$ 0.01	$ 0.10
Common Class A
Increase (Decrease) in Stockholders' Equity
Treasury stock repurchases (in shares)	879,243	0
Common Class A | Common Stock
Increase (Decrease) in Stockholders' Equity
Treasury stock repurchases (in shares)	879,243
Grant of exchangeability, redemption and issuance of limited partnership interests and issuance of common stock (in shares)	2,817,271	436,285
FPU's
Increase (Decrease) in Stockholders' Equity
Stock issued (in shares)	1,008,731

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