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Noncontrolling Interest in Consolidated Subsidiary
12 Months Ended
Dec. 31, 2012
Noncontrolling Interest in Consolidated Subsidiary  
Noncontrolling Interest in Consolidated Subsidiary

Note 8. Noncontrolling Interest in Consolidated Subsidiary

        At December 31, 2012, we owned 22,000,000, or approximately 56.0%, of SIR's outstanding common shares. SIR is a REIT that is focused on owning and investing in net leased, single tenant properties and was a 100% owned subsidiary of ours until the SIR IPO in March 2012, when it became a publicly owned company listed on the NYSE. We are SIR's largest shareholder and SIR remains one of our consolidated subsidiaries. The portion of SIR's equity that we do not own, or approximately 44.0% as of December 31, 2012, is reported as noncontrolling interest in our consolidated balance sheets. The portion of SIR's net income not allocated to us is reported as noncontrolling interest in our consolidated statements of operations. See Note 10 for additional information regarding the SIR IPO.

        The following table summarizes the changes in our ownership interest in SIR and the effects on the equity attributable to us for the year ended December 31, 2012:

 
  CommonWealth
REIT
Ownership
Percentage of
SIR After
Transaction
  Effect on the
Equity
Attributable to
CommonWealth
REIT Common
Shareholders
 

Increase in noncontrolling interest related to the SIR IPO in March 2012

    70.5 % $ 23,857  

Increase in noncontrolling interest related to the issuance of SIR common shares pursuant to its equity compensation plan in September 2012

   
70.4

%
 
253
 

Increase in noncontrolling interest related to the issuance of SIR common shares in December 2012

   
56.0

%
 
707
 
             

 

       
$

24,817