Transactions with Related Parties Transactions with Related Parties Narrative (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2017 USD ($)	Jun. 30, 2017 USD ($) Property	Jun. 30, 2016 USD ($) Property	Jun. 30, 2017 USD ($) Property	Jun. 30, 2016 USD ($) Property
Rate for administration fees				0.45%
Fees and commissions, other		$ 0	$ 0	$ 938,000	$ 388,000
MF Properties Managed [Member]
Number of Real Estate Properties | Property		7	7	7	7
Management fees revenue		$ 92,000	$ 164,000	$ 205,000	$ 341,000
Jade Park MF Property [Member]
Contract for exterior rehabilitation service beginning period				2017-06
Contract for exterior rehabilitation service expiration period				2017
Exterior rehabilitation services received		0		$ 0
Majority-Owned Subsidiary, Unconsolidated [Member]
Payment for administrative fees		905,000	678,000	1,800,000	1,400,000
Affiliated Entity [Member]
Payment for administrative fees		37,000	30,000	52,000	49,000
Farnam Capital Advisors, LLC [Member]
Placement advisory fees		0	0	269,000	194,000
Farnam Capital Advisors, LLC [Member] | Term A/B Trust [Member]
Consulting fees	$ 921,000	$ 0	$ 0	$ 921,000	$ 0