Consolidated Statements Of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Antidilutive securities excluded from computation of earnings per share (in shares)	4,316,531	3,173,266	4,274,583	3,790,858
Share based payments	$ 3,474	$ 3,123	$ 5,432	$ 4,729
Limited Partnership Common Units And Vested Ltip Units [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)	3,379,354	3,173,266	3,344,178	3,139,019
Stock Compensation Plan [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)	616,937	0	423,399	144,005
Contingently Issuable Shares [Member]
Antidilutive securities excluded from computation of earnings per share (in shares)	320,240	0	507,006	507,834