UNSECURED SENIOR NOTES	3 Months Ended
Mar. 31, 2013
UNSECURED SENIOR NOTES
UNSECURED SENIOR NOTES	5. UNSECURED SENIOR NOTES On June 26, 2012, the Operating Partnership issued $250 million in aggregate principal amount of unsecured senior notes due July 15, 2022 (the “senior notes”) which bear interest at a rate of 4.80%. The indenture under which the unsecured senior notes were issued restricts the ability of the Operating Partnership and its subsidiaries to incur debt unless the Operating Partnership and its consolidated subsidiaries comply with a leverage ratio not to exceed 60% and an interest coverage ratio of more than 1.5:1 after giving effect to the incurrence of the debt. The indenture also restricts the ability of the Operating Partnership and its subsidiaries to incur secured debt unless the Operating Partnership and its consolidated subsidiaries comply with a secured debt leverage ratio not to exceed 40% after giving effect to the incurrence of the debt. The indenture also contains other financial and customary covenants, including a covenant not to own unencumbered assets with a value less than 150% of the unsecured indebtedness of the Operating Partnership and its consolidated subsidiaries. The Operating Partnership is currently in compliance with all of the financial covenants under the senior notes.

5. UNSECURED SENIOR NOTES

On June 26, 2012, the Operating Partnership issued $250 million in aggregate principal amount of unsecured senior notes due July 15, 2022 (the “senior notes”) which bear interest at a rate of 4.80%. The indenture under which the unsecured senior notes were issued restricts the ability of the Operating Partnership and its subsidiaries to incur debt unless the Operating Partnership and its consolidated subsidiaries comply with a leverage ratio not to exceed 60% and an interest coverage ratio of more than 1.5:1 after giving effect to the incurrence of the debt. The indenture also restricts the ability of the Operating Partnership and its subsidiaries to incur secured debt unless the Operating Partnership and its consolidated subsidiaries comply with a secured debt leverage ratio not to exceed 40% after giving effect to the incurrence of the debt. The indenture also contains other financial and customary covenants, including a covenant not to own unencumbered assets with a value less than 150% of the unsecured indebtedness of the Operating Partnership and its consolidated subsidiaries. The Operating Partnership is currently in compliance with all of the financial covenants under the senior notes.