Concentration of Risk	3 Months Ended
Concentration of Risk	Mar. 31, 2012
Concentration of Risk [Abstract]
Concentration of Risk	Concentration of Risk The Company seeks to reduce its operating and leasing risks through the geographic diversification of its properties, tenant industry diversification, avoidance of dependency on a single asset and the creditworthiness of its tenants. For the three months ended March 31, 2012 and 2011, no single tenant represented greater than 10% of rental revenues. Cash and cash equivalent balances at certain institutions may exceed insurable amounts. The Company believes it mitigates this risk by investing in or through major financial institutions.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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+ Details