Debt	9 Months Ended
Sep. 30, 2011
Debt Instruments [Abstract]
Debt	DEBT In connection with the acquisition of Tower Shops on January 19, 2011, we assumed a mortgage loan with a face amount of $41.0 million and a fair value of approximately $42.9 million. The mortgage loan bore interest at 6.52%, had a scheduled maturity of July 1, 2015 and was contractually pre-payable after June 2011 with a 3% prepayment premium. On March 24, 2011, the lender unexpectedly allowed us to repay the $41.0 million mortgage loan prior to the permitted prepayment date including the 3% prepayment premium of $1.2 million. The $0.3 million of income from early extinguishment of debt in the nine months ended September 30, 2011, relates to the early payoff of this loan and includes the write-off of the unamortized debt premium of $1.7 million net of the 3% prepayment premium and unamortized debt fees. The mortgage loan was repaid with funds borrowed on our $300.0 million revolving credit facility. On February 15, 2011, we repaid our $75.0 million 4.50% senior notes on the maturity date using funds borrowed on our $300.0 million revolving credit facility. On April 29, 2011, we repaid the $31.7 million mortgage loan on Federal Plaza which had an original maturity date of June 1, 2011. This loan was repaid with funds borrowed on our $300.0 million revolving credit facility. On June 1, 2011, we repaid the $5.6 million mortgage loan on Tysons Station which had an original maturity date of September 1, 2011. This loan was repaid with funds borrowed on our $300.0 million revolving credit facility. On July 7, 2011, we replaced our existing $300.0 million revolving credit facility with a new $400.0 million unsecured revolving credit facility. This new revolving credit facility matures on July 6, 2015, subject to a one-year extension at our option, and bears interest at LIBOR plus 115 basis points. The spread over LIBOR is subject to adjustment based on our credit rating. During the three and nine months ended September 30, 2011, the maximum amount of borrowings outstanding under our revolving credit facility was $219.0 million and $265.0 million, respectively, the weighted average amount of borrowings outstanding was $184.6 million and $186.0 million, respectively, and the weighted average interest rate, before amortization of debt fees, was 1.31% and 0.89%, respectively. At September 30, 2011, there was $158.0 million outstanding on our revolving credit facility. Our revolving credit facility and certain notes require us to comply with various financial covenants, including the maintenance of minimum shareholders’ equity and debt coverage ratios and a maximum ratio of debt to net worth. As of September 30, 2011, we were in compliance with all loan covenants.

DEBT

In connection with the acquisition of Tower Shops on January 19, 2011, we assumed a mortgage loan with a face amount of $41.0 million and a fair value of approximately $42.9 million. The mortgage loan bore interest at 6.52%, had a scheduled maturity of July 1, 2015 and was contractually pre-payable after June 2011 with a 3% prepayment premium. On March 24, 2011, the lender unexpectedly allowed us to repay the $41.0 million mortgage loan prior to the permitted prepayment date including the 3% prepayment premium of $1.2 million. The $0.3 million of income from early extinguishment of debt in the nine months ended September 30, 2011, relates to the early payoff of this loan and includes the write-off of the unamortized debt premium of $1.7 million net of the 3% prepayment premium and unamortized debt fees. The mortgage loan was repaid with funds borrowed on our $300.0 million revolving credit facility.

On February 15, 2011, we repaid our $75.0 million 4.50% senior notes on the maturity date using funds borrowed on our $300.0 million revolving credit facility.

On April 29, 2011, we repaid the $31.7 million mortgage loan on Federal Plaza which had an original maturity date of June 1, 2011. This loan was repaid with funds borrowed on our $300.0 million revolving credit facility.

On June 1, 2011, we repaid the $5.6 million mortgage loan on Tysons Station which had an original maturity date of September 1, 2011. This loan was repaid with funds borrowed on our $300.0 million revolving credit facility.

On July 7, 2011, we replaced our existing $300.0 million revolving credit facility with a new $400.0 million unsecured revolving credit facility. This new revolving credit facility matures on July 6, 2015, subject to a one-year extension at our option, and bears interest at LIBOR plus 115 basis points. The spread over LIBOR is subject to adjustment based on our credit rating.

During the three and nine months ended September 30, 2011, the maximum amount of borrowings outstanding under our revolving credit facility was $219.0 million and $265.0 million, respectively, the weighted average amount of borrowings outstanding was $184.6 million and $186.0 million, respectively, and the weighted average interest rate, before amortization of debt fees, was 1.31% and 0.89%, respectively. At September 30, 2011, there was $158.0 million outstanding on our revolving credit facility.

Our revolving credit facility and certain notes require us to comply with various financial covenants, including the maintenance of minimum shareholders’ equity and debt coverage ratios and a maximum ratio of debt to net worth. As of September 30, 2011, we were in compliance with all loan covenants.