Common Shares of Beneficial Interest (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Schedule of ATM Equity Program

The following shares were sold under the ATM equity offering programs during the three and six months ended June 30, 2016 (in thousands, except per share amounts):

	Three Months Ended June 30,		Six Months Ended June 30,
	2016		2016
Shares sold	2,792		3,277
Weighted average price per share	$	38.32	$	38.16
Gross proceeds	$	106,992	$	125,058