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Grants to Trustees	6 Months Ended
Grants to Trustees	Jun. 30, 2016
Grants to Trustees [Abstract]
Grants To Trustees	GRANTS TO TRUSTEES On December 21, 2015, each of our four independent trustees and one trustee emeritus was granted 1,500 common shares, which vested immediately. The 7,500 common shares granted to our trustees had a grant fair value of $12.10 per share. On December 21, 2015, one of our independent trustees elected to receive a total of 992 common shares with a grant date fair value of $12.10 in lieu of cash for board fees. The fair value of the shares granted were determined using quoted prices available on the date of grant.