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Partners Equity of The Operating Partnership | 12 Months Ended
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Dec. 31, 2011
Equity [Abstract] |
PARTNERS' EQUITY OF THE OPERATING PARTNERSHIP | PARTNERS’ EQUITY OF THE OPERATING PARTNERSHIP Earnings per Common Partnership Unit The following table details the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):
| Years ended December 31,
| 2011 |  | 2010 |  | 2009
| Basic |  | Diluted |  | Basic |  | Diluted |  | Basic |  | Diluted
Numerator |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | (13,232 | ) |  | $ | (13,232 | ) |  | $ | (31,276 | ) |  | $ | (31,276 | ) |  | $ | 3,588 |  |  | $ | 3,588 |
Net (loss) income from continuing operations attributable to non-controlling interests | — |  |  | — |  |  | — |  |  | — |  |  | (30 | ) |  | (30 | )
Amount allocable to unvested restricted unitholders | (505 | ) |  | (505 | ) |  | (512 | ) |  | (512 | ) |  | (279 | ) |  | (279 | )
Preferred share dividends | (7,992 | ) |  | (7,992 | ) |  | (7,992 | ) |  | (7,992 | ) |  | (7,992 | ) |  | (7,992 | )
Loss from continuing operations available to common unitholders | (21,729 | ) |  | (21,729 | ) |  | (39,780 | ) |  | (39,780 | ) |  | (4,713 | ) |  | (4,713 | )
Discontinued operations attributable to common unitholders | 8,517 |  |  | 8,517 |  |  | 13,670 |  |  | 13,670 |  |  | 4,501 |  |  | 4,501 |
Net loss available to common unitholders | $ | (13,212 | ) |  | $ | (13,212 | ) |  | $ | (26,110 | ) |  | $ | (26,110 | ) |  | $ | (212 | ) |  | $ | (212 | )
Denominator |  |  |  |  |  |  |  |  |  |  |
Weighted-average units outstanding | 145,118,841 |  |  | 145,118,841 |  |  | 137,454,796 |  |  | 137,454,796 |  |  | 114,712,869 |  |  | 114,712,869 |
Contingent securities/Stock based compensation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1,353,246 |
Total weighted-average units outstanding | 145,118,841 |  |  | 145,118,841 |  |  | 137,454,796 |  |  | 137,454,796 |  |  | 114,712,869 |  |  | 116,066,115 |
Earnings (loss) per Common Share: |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations attributable to common unitholders | $ | (0.15 | ) |  | $ | (0.15 | ) |  | $ | (0.29 | ) |  | $ | (0.29 | ) |  | $ | (0.04 | ) |  | $ | (0.04 | )
Discontinued operations attributable to common unitholders | 0.06 |  |  | 0.06 |  |  | 0.10 |  |  | 0.10 |  |  | 0.04 |  |  | 0.04 |
Net loss attributable to common unitholders | $ | (0.09 | ) |  | $ | (0.09 | ) |  | $ | (0.19 | ) |  | $ | (0.19 | ) |  | $ | — |  |  | $ | — |
Unvested restricted shares are considered participating securities which require the use of the two-class method for the computation of basic and diluted earnings per share. For the years ended December 31, 2011, 2010, and 2009 earnings representing nonforfeitable dividends as noted in the table above were allocated to the unvested restricted shares. Common Partnership Unit and Preferred Mirror Units The Operating Partnership issues partnership units to the Parent Company in exchange for the contribution of the net proceeds of any equity security issuance by the Parent Company. The number and terms of such partnership units correspond to the number and terms of the related equity securities issued by the Parent Company. In addition, the Operating Partnership may also issue separate classes of partnership units. Historically, the Operating Partnership has had the following types of partnership units outstanding (i) Preferred Partnership Units which have been issued to parties other than the Parent Company (ii) Preferred Mirror Partnership Units which have been issued to the Parent Company and (iii) Common Partnership Units which include both interests held by the Parent Company and those held by other limited partners. Each of these interests is described in more detail below. Preferred Mirror Partnership Units In exchange for the proceeds received in corresponding offerings by the Parent Company of preferred shares of beneficial interest, the Operating Partnership has issued to the Parent Company a corresponding amount of Preferred Mirror Partnership Units with terms consistent with that of the preferred securities issued by the Parent Company. On December 30, 2003, the Operating Partnership issued 2,000,000 Series D Preferred Mirror Units to the Parent Company in exchange for its contribution of the proceeds of its Series C Preferred Shares. The 2,000,000 Series D Preferred Mirror Units outstanding have an aggregate liquidation preference of $50.0 million, or $25.00 per unit. Cumulative distributions on the Series D Preferred Mirror Units are payable quarterly at an annualized rate of 7.50% of the liquidation preference. In the event that any of the Series C Preferred Shares of the Parent Company are redeemed, which may occur at the option of the Parent Company at any time on or after December 30, 2008, then an equivalent number of Series D Preferred Mirror Units will be redeemed. On February 27, 2004, the Operating Partnership issued 2,300,000 Series E Preferred Mirror Units to the Parent Company in exchange for its contribution of the net proceeds of its Series D Preferred Shares. The 2,300,000 Series E Preferred Mirror Units outstanding have an aggregate liquidation preference of $57.5 million, or $25.00 per unit. Cumulative distributions on the Series E Preferred Mirror Units are payable quarterly at an annualized rate of 7.375% of the liquidation preference. In the event that any of the Series D Preferred Shares of the Parent Company are redeemed, which may occur at the option of the Parent Company at any time on or after February 27, 2009, then an equivalent number of Series E Preferred Mirror Units will be redeemed. Common Partnership Units (Redeemable and General) The Operating Partnership has two classes of Common Partnership Units: (i) Class A Limited Partnership Interest which are held by both the Parent Company and outside third parties and (iii) General Partnership Interests which are held by the Parent Company (collectively, the Class A Limited Partnership Interest, and General Partnership Interests are referred to as “Common Partnership Units”). The holders of the Common Partnership Units are entitled to share in cash distributions from, and in profits and losses of, the Operating Partnership, in proportion to their respective percentage interests, subject to preferential distributions on the preferred mirror units and the preferred units. The Common Partnership Units held by the Parent Company (comprised of both General Partnership Units and Class A Limited Partnership Units) are presented as partner’s equity in the consolidated financial statements. Class A Limited Partnership Interest held by parties other than the Parent Company are redeemable at the option of the holder for a like number of common shares of the Parent Company, or cash, or a combination thereof, at the election of the Parent Company. Because the form of settlement of these redemption rights are not within the control of the Operating Partnership, these Common Partnership Units have been excluded from partner’s equity and are presented as redeemable limited partnership units measured at the potential cash redemption value as of the end of the periods presented based on the closing market price of the Parent Company’s common shares at December 31, 2011, 2010 and 2009, which was $9.50, $11.65, $11.40, respectively. As of December 31, 2011 and 2010, 2,698,647 and 2,791,640 of Class A Units, respectively, were outstanding and owned by outside limited partners of the Operating Partnership. On December 23, 2011, the Parent Company issued 7,111,112 of its common shares in exchange for an equal number of Class F (2010) Units of the Operating Partnership. The Class F (2010) Units were issued in August 2010 as part of the acquisition of an office property and were subject to redemption at the option of the holder after the first anniversary of the issuance. The Operating Partnership had the option to satisfy the redemption either for an amount, per unit, of cash equal to the market price of one of the Parent Company's common shares (based on the five-day trading average ending on the date of the exchange) or for one of the Parent Company's common shares for each unit redeemed. On December 23, 2011, the Operating Partnership satisfied in full BAT Partners, L.P.'s tender for redemption of all 7,111,112 of the Class F (2010) Units through the issuance of 7,111,112 Parent Company's common shares. On December 13, 2011, the Operating Partnership declared a distribution of $0.15 per Class A common unit, totaling $21.5 million, which was paid on January 19, 2012 to unitholders of record as of January 5, 2012. On December 13, 2011, the Operating Partnership declared distributions on its Series D Preferred Mirror Units and Series E Preferred Mirror Units to holders of record as of December 30, 2011. These units are entitled to a preferential return of 7.50% and 7.375%, respectively. Distributions paid on January 17, 2012 to holders of Series D Preferred Mirror Units and Series E Preferred Mirror Units totaled $0.9 million and $1.1 million, respectively. During the year ended December 31, 2011, the Parent Company has contributed net proceeds of $8.0 million from the sale of 679,285 common shares under its Offering Program to the Operating Partnership in exchange for the issuance of 679,285 common partnership units to the Parent Company. From the inception of the Offering Program in March 2010 through December 31, 2011, the Parent Company has sold 6,421,553 shares under this program resulting in 8,578,447 remaining shares available for sale. The Operating Partnership used the net proceeds from the sales to repay balances on its unsecured revolving credit facility and for general corporate purposes. Common Share Repurchases The Parent Company did not purchase any shares during the year-ended December 31, 2011 and accordingly, during the year ended December 31, 2011, the Operating Partnership did not repurchase any units in connection with the Parent Company’s share repurchase program.

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