Commitments and Contingencies	3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We are subject to various legal proceedings and claims that arise in the ordinary course of business. Excluding ordinary routine litigation incidental to our business, we are not currently a party to any legal proceedings that we believe would reasonably be expected to have a material adverse effect on our business, financial condition or results of operations. Concentration of Credit Risk Our properties are located in Los Angeles County, California and Honolulu, Hawaii. The ability of the tenants to honor the terms of their respective leases is dependent upon the economic, regulatory and social factors affecting the markets in which the tenants operate. We perform ongoing credit evaluations of our tenants for potential credit losses. In addition, we have financial instruments that subject us to credit risk, which consist primarily of accounts receivable, deferred rents receivable and interest rate contracts. We maintain our cash and cash equivalents at high quality financial institutions with investment grade ratings. Interest bearing accounts at each U.S. banking institution are insured by the Federal Deposit Insurance Corporation up to $250 thousand. We have not experienced any losses to date on our deposited cash. Asset Retirement Obligations Conditional asset retirement obligations represent a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement is conditional on a future event that may or may not be within our control. A liability for a conditional asset retirement obligation must be recorded if the fair value of the obligation can be reasonably estimated. Environmental site assessments and investigations have identified 20 properties in our consolidated portfolio containing asbestos, which would have to be removed in compliance with applicable environmental regulations if these properties undergo major renovations or are demolished. As of March 31, 2013, the obligations to remove the asbestos from these properties have indeterminable settlement dates, and we are unable to reasonably estimate the fair value of the associated conditional asset retirement obligation. Investment in Unconsolidated Real Estate Funds We manage and own an equity interest in two Funds through which institutional investors provided capital commitments for acquisition of properties. The Investment Period for these Funds ended on October 7, 2012, and no further properties will be purchased by them. As of March 31, 2013, we had a remaining undrawn capital commitment of $26.4 million which may only be drawn for specific purposes. Tenant Concentrations For the three months ended March 31, 2013 and 2012, no tenant accounted for more than 10% of our total rental revenue and tenant recoveries.

Commitments and Contingencies

We are subject to various legal proceedings and claims that arise in the ordinary course of business. Excluding ordinary routine litigation incidental to our business, we are not currently a party to any legal proceedings that we believe would reasonably be expected to have a material adverse effect on our business, financial condition or results of operations.

Concentration of Credit Risk

Our properties are located in Los Angeles County, California and Honolulu, Hawaii. The ability of the tenants to honor the terms of their respective leases is dependent upon the economic, regulatory and social factors affecting the markets in which the tenants operate. We perform ongoing credit evaluations of our tenants for potential credit losses. In addition, we have financial instruments that subject us to credit risk, which consist primarily of accounts receivable, deferred rents receivable and interest rate contracts. We maintain our cash and cash equivalents at high quality financial institutions with investment grade ratings. Interest bearing accounts at each U.S. banking institution are insured by the Federal Deposit Insurance Corporation up to $250 thousand. We have not experienced any losses to date on our deposited cash.

Asset Retirement Obligations

Conditional asset retirement obligations represent a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement is conditional on a future event that may or may not be within our control. A liability for a conditional asset retirement obligation must be recorded if the fair value of the obligation can be reasonably estimated. Environmental site assessments and investigations have identified 20 properties in our consolidated portfolio containing asbestos, which would have to be removed in compliance with applicable environmental regulations if these properties undergo major renovations or are demolished. As of March 31, 2013, the obligations to remove the asbestos from these properties have indeterminable settlement dates, and we are unable to reasonably estimate the fair value of the associated conditional asset retirement obligation.

Investment in Unconsolidated Real Estate Funds

We manage and own an equity interest in two Funds through which institutional investors provided capital commitments for acquisition of properties. The Investment Period for these Funds ended on October 7, 2012, and no further properties will be purchased by them. As of March 31, 2013, we had a remaining undrawn capital commitment of $26.4 million which may only be drawn for specific purposes.

Tenant Concentrations

For the three months ended March 31, 2013 and 2012, no tenant accounted for more than 10% of our total rental revenue and tenant recoveries.