Investment in Unconsolidated Joint Ventures (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Investment in Unconsolidated Joint Ventures
Initial preferred capital contribution in joint venture provided at closing.	$ 20,143,000
Income from unconsolidated joint venture	116,000
Joint Venture [Member]
Investment in Unconsolidated Joint Ventures
Number of properties owned by joint venture	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	$ 116,000