Investment in Unconsolidated Joint Ventures (Details) - Jun. 30, 2015	USD ($) property	USD ($) property
Investment in Unconsolidated Joint Ventures
Initial preferred capital contribution in joint venture provided at closing.		$ 20,143,000
Income from unconsolidated joint venture	$ 753,000	$ 869,000
Joint Venture [Member]
Investment in Unconsolidated Joint Ventures
Number of properties owned by joint venture | property	4	4
Initial preferred capital contribution in joint venture provided at closing.		$ 20,143,000
Additional preferred capital contributions in joint venture commited		5,507,000
Total preferred capital contributions in joint venture		$ 25,650,000
Preferred return percentage		15.00%
Percentage of common membership interest in the joint venture that may be purchased by the Company		100.00%
Period of payment of the preferred equity investment balance if the common equity member elects to call the preferred interest		36 months
Income from unconsolidated joint venture	$ 753,000	$ 869,000