Noncontrolling Interests In Operating Partnership and Other Noncontrolling Interests - Schedule of OP Unit Activity (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Abstract]
OP Units redeemed for common stock (in shares)	35,000	0	23,850
OP Units redeemed for cash (in shares)	30,000	33,896	6,760
Cash paid for OP Units redeemed	$ 2,558	$ 2,510	$ 506
OP Units issued in conjunction with acquisitions (in shares)	21,768	90,228	93,569
Value of OP Units issued in conjunction with acquisitions	$ 1,877	$ 7,618	$ 7,247