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Basis of Presentation (Details) $ in Thousands	1 Months Ended
Basis of Presentation (Details) $ in Thousands	Mar. 31, 2017 building property	Jun. 30, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of properties included in joint venture agreement \| property	1
Number of buildings included in joint venture agreement \| building	2
Variable interest entity, consolidated, carrying amount, assets		$ 1,122,953
Variable interest entity, consolidated, carrying amount, liabilities		$ 723,417