Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details)

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Noncontrolling Interests In Subsidiaries (Changes In Noncontrolling Interests Of Subsidiaries) (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Noncontrolling Interests In Subsidiaries [Abstract]        
Balance, Beginning, Common Units 9,976,344 10,266,143 10,229,349 10,438,855
Redemption of common units for shares of common stock (3,000) (24,294) (38,011) (252,070)
Issuance of units, Common Units      
Redemption of common units     (304,638)  
Conversion of vested LTIP units to common units     18,438  
Vested LTIP units     68,206 55,064
Balance, Ending, Common Units 9,973,344 10,241,849 9,973,344 10,241,849
Balance, Beginning, LTIP Units 1,826,331 1,795,747 1,707,106 1,230,877
Issuance of units, LTIP Units     565,623 864,024
Vested LTIP units     (86,644) (55,064)
Cancellation of units   (29,427) (359,754) (273,517)
Balance, Ending, LTIP Units 1,826,331 1,766,320 1,826,331 1,766,320