Subsequent Events	6 Months Ended
Jun. 30, 2013
Subsequent Events [Abstract]
Subsequent Events	13. Subsequent Events On July 1, 2013 and July 5, 2013, we paid off prior to maturity mortgage loans payable in the aggregate amount of $14,046. Effective July 1, 2013, certain officers and employees were granted performance units under the 2013 Long-Term Incentive Program, newly adopted by the Board of Directors of the Company. The performance units vest based upon the relative total shareholder return (“TSR”) of the Company's stock compared to the weighted average TSR of the MSCI US REIT Index and the NAREIT Industrial Index. The TSR for half of the granted units is calculated based upon the performance from July 1, 2013 through June 30, 2014 and the other half is calculated based upon the performance from July 1, 2013 through December 31, 2015. At the end of the performance periods, each participant will be issued shares of the Company's common stock equal to the participant's share of the aggregate unit value. The participants will also be entitled to dividend equivalents representing any common dividends that have accrued with respect to such shares after the issuance of the performance units and prior to the date of vesting. On July 18, 2013, the Company redeemed the 2,000,000 Depositary Shares, each representing 1/10,000th of a share of our 7.25% Series K Cumulative Redeemable Preferred Stock, $0.01 par value, at a redemption price of $25.00 per Depositary Share, totaling $50,000 plus pro-rated accrued dividends. An equivalent number of Series K Cumulative Redeemable Preferred Units were redeemed on July 18, 2013 as well. On July 19, 2013, we entered into an amendment and restatement of our Unsecured Credit Facility (as amended and restated, the "New Credit Facility") which increased the borrowing capacity thereunder to $625,000. We may request that the borrowing capacity under the New Credit Facility be increased to $825,000, subject to certain restrictions. The New Credit Facility provides for interest only payments initially at LIBOR plus 145 basis points, that varies based on our leverage ratio. In the event the Company achieves an investment grade rating from one of certain rating agencies, the rate may be decreased at our election, based on the investment grade rating. The New Credit Facility matures on September 29, 2017, unless extended an additional one year at our election, subject to certain restrictions. From July 1, 2013 to August 2, 2013, we sold three industrial properties for approximately $5,982. There were no industrial properties acquired during the period.

13. Subsequent Events

On July 1, 2013 and July 5, 2013, we paid off prior to maturity mortgage loans payable in the aggregate amount of $14,046.

Effective July 1, 2013, certain officers and employees were granted performance units under the 2013 Long-Term Incentive Program, newly adopted by the Board of Directors of the Company. The performance units vest based upon the relative total shareholder return (“TSR”) of the Company's stock compared to the weighted average TSR of the MSCI US REIT Index and the NAREIT Industrial Index. The TSR for half of the granted units is calculated based upon the performance from July 1, 2013 through June 30, 2014 and the other half is calculated based upon the performance from July 1, 2013 through December 31, 2015. At the end of the performance periods, each participant will be issued shares of the Company's common stock equal to the participant's share of the aggregate unit value. The participants will also be entitled to dividend equivalents representing any common dividends that have accrued with respect to such shares after the issuance of the performance units and prior to the date of vesting.

On July 18, 2013, the Company redeemed the 2,000,000 Depositary Shares, each representing 1/10,000th of a share of our 7.25% Series K Cumulative Redeemable Preferred Stock, $0.01 par value, at a redemption price of $25.00 per Depositary Share, totaling $50,000 plus pro-rated accrued dividends. An equivalent number of Series K Cumulative Redeemable Preferred Units were redeemed on July 18, 2013 as well.

On July 19, 2013, we entered into an amendment and restatement of our Unsecured Credit Facility (as amended and restated, the "New Credit Facility") which increased the borrowing capacity thereunder to $625,000. We may request that the borrowing capacity under the New Credit Facility be increased to $825,000, subject to certain restrictions. The New Credit Facility provides for interest only payments initially at LIBOR plus 145 basis points, that varies based on our leverage ratio. In the event the Company achieves an investment grade rating from one of certain rating agencies, the rate may be decreased at our election, based on the investment grade rating. The New Credit Facility matures on September 29, 2017, unless extended an additional one year at our election, subject to certain restrictions.

From July 1, 2013 to August 2, 2013, we sold three industrial properties for approximately $5,982. There were no industrial properties acquired during the period.