Summary of Significant Accounting Policies (Details)	3 Months Ended		12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) reporting_unit $ / shares	Dec. 31, 2014 USD ($)	Jan. 30, 2015 USD ($)	Feb. 06, 2014 USD ($)
Summary of Significant Accounting Policies [Line Items]
Impairment of Real Estate			$ 0
Below-market lease amortization			(232,000)	$ (250,000)
Capital Expenditures and Leasing Costs
Expected capital expenditures and lease costs through 2013	$ 3,000,000		3,000,000
Debt
Mortgage and other loans, net	290,878,000	$ 290,738,000	290,878,000	290,738,000
Unsecured notes payable to current and former related parties	29,433,000	29,433,000	29,433,000	29,433,000
Total consolidated debt	$ 320,300,000		$ 320,300,000
Weighted average interest rate	5.78%		5.78%
Weighted average remaining term			9 months 10 days
Accrued interest on unsecured notes payable to related parties	$ 15,627,000	12,776,000	$ 15,627,000	12,776,000
Asset Impairment Charges
Non-cash impairment charge to write off investment in unconsolidated joint venture			$ 0	900,000
Goodwill
Number of reporting units | reporting_unit			1
Goodwill, net	37,665,000	39,111,000	$ 37,665,000	39,111,000
Revenue Recognition
Straight line rent adjustments included in rental revenues			20,000	(10,000)
Balance Sheet Related Disclosures
Allowance for doubtful accounts	300,000	200,000	300,000	200,000
Lease security available in security deposits	$ 1,840,000	1,675,000	$ 1,840,000	1,675,000
Income Taxes
Minimum percentage of taxable income distribution to stockholders to qualify as REIT			90.00%
Minimum percentage of gross income derived from qualifying sources to qualify as REIT			95.00%
Preferred Units of Operating Partnership
Equity
Distribution at annual percentage of liquidation preference per Preferred Unit	2.00%		2.00%
Liquidation preference per Preferred Unit (in usd per share) | $ / shares	$ 25		$ 25
Buildings and Improvements | Minimum
Balance Sheet Related Disclosures
Properties and equipment, estimated useful life			5 years
Buildings and Improvements | Maximum
Balance Sheet Related Disclosures
Properties and equipment, estimated useful life			42 years
Furniture, Fixtures and Equipment | Minimum
Balance Sheet Related Disclosures
Properties and equipment, estimated useful life			3 years
Furniture, Fixtures and Equipment | Maximum
Balance Sheet Related Disclosures
Properties and equipment, estimated useful life			7 years
Clifford Center
Summary of Significant Accounting Policies [Line Items]
Net Proceeds from Sale of Held For Sale Asset					$ 2,100,000
Asset Impairment Charges
Non-cash asset impairment of property classified as Discontinued operations				500,000
Income Taxes
Goodwill, Written off Related to Sale of Business Unit			$ 1,400,000
Shidler Pacific Advisors
Summary of Significant Accounting Policies [Line Items]
Corporate Quarterly Management Fee	$ 180,000	210,000	200,000	200,000
Affiliated Entity [Member]
Debt
Unsecured notes payable to current and former related parties	29,400,000		29,400,000
Accrued interest on unsecured notes payable to related parties	15,600,000	12,800,000	15,600,000	12,800,000
Affiliated Entity [Member] | First Insurance Center
Debt
Unsecured notes payable to current and former related parties	8,300,000		8,300,000			$ 8,300,000
Mortgages
Debt
Mortgage and other loans, net	265,878,000	265,738,000	265,878,000	265,738,000
Mortgages | Clifford Center
Debt
Secured Debt, Net of Discount, Held For Sale		6,300,000		6,300,000
FHB Credit Facility
Debt
Revolving line of credit, amount outstanding	$ 25,000,000	$ 25,000,000	$ 25,000,000	$ 25,000,000