Shareholders' Equity And Noncontrolling Interests In Partnership (Details) - shares	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Total number of Common Units outstanding (in shares)	2,129,422	2,066,615	2,066,615
Common units converted to Class A Common Shares (in shares)	23,964	0	62,807
LTIP unit issuance (in shares)		530,281