Related Party Transactions (Details)					12 Months Ended
	Jul. 08, 2015	May. 08, 2015	May. 15, 2014	May. 15, 2013	Dec. 31, 2015 USD ($) fiscal_quarter	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Related Party Transaction
Asset management fees					$ 2,312,000	$ 2,263,000	$ 2,290,000
Number of fiscal quarters immediately preceding the date reimbursement is sought | fiscal_quarter					4
Administrative services cost incurred					$ 4,842,000	5,964,000	5,657,000
Property management fees					1,924,000	1,842,000	1,745,000
Payables to related parties					747,000	1,122,000
Behringer Harvard Opportunity Advisors I
Related Party Transaction
Asset management fees					$ 2,300,000	2,300,000	2,300,000
Acquisition and advisory fees as a percentage of contract purchase price					2.50%
Acquisition and advisory fees as a percentage of funds advanced in respect of loan investment					2.50%
Acquisition and advisory fees					$ 300,000	200,000	0
Debt Instrument, Fee Amount					$ 0	600,000	0
Advisor's operating expenses as a percentage of average invested assets					2.00%
Advisor's operating expenses as percentage of net income other than any additions to non cash reserves and any gain from sale of assets					25.00%
Administrative services cost incurred					$ 1,400,000	1,700,000	1,400,000
Behringer Harvard Opportunity Advisors I | Maximum
Related Party Transaction
Administrative services cost incurred					1,700,000
The Ablon at Frisco Square [Member]
Related Party Transaction
Acquisition and Advisory Fees					$ 200,000
BH Property Management
Related Party Transaction
Advisor's and property management fee as a percentage of gross revenue					4.50%
Oversight fee as a percentage of gross revenues of the property managed					0.50%
Property management fees					$ 700,000	900,000	$ 1,000,000
Advisor and its affiliates
Related Party Transaction
Payables to related parties					$ 800,000	$ 1,100,000
After amendment
Related Party Transaction
Asset management fee as a percentage of aggregate asset value of acquired real estate and real estate related assets					0.575%
Advisory Agreement [Member] | Behringer Harvard Opportunity Advisors I
Related Party Transaction
Related Party, Term of Contract				1 year
Related Party, Basis Points of Loan Commitment, Year One					0.40%
Related Party, Term of Contract Renewal		1 month	1 year
Related Party, Basis Points of Loan Commitment, Year Two					0.30%
Related Party, Basis Points of Loan Commitment, Year Three					0.30%
Advisory Agreement [Member] | Behringer Harvard Opportunity Advisors I | First year of any extension | Minimum [Member]
Related Party Transaction
Minimum extension period					120 days
Advisory Agreement [Member] | Behringer Harvard Opportunity Advisors I | Extension of three or more years | Maximum
Related Party Transaction
Advisor's debt financing fee for revised loan as a percentage of loan commitment amount					1.00%
Amount due to advisor for revised loan as percentage of loan commitment amount					1.00%
Amendment [Member] | Behringer Harvard Opportunity Advisors I
Related Party Transaction
Related Party, Term of Contract	10 months