Quarterly report pursuant to Section 13 or 15(d)

Disposition of Property (Details)

Disposition of Property (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] - Westbrook [Member]
ft² in Thousands, $ in Thousands
1 Months Ended
May 31, 2017
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Square Feet | ft² 290
Net proceeds on sale of assets $ 39,212
Gain on sale $ 6,943