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Basis of Presentation and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2012
Estimated Useful Lives of Property and Equipment

We compute depreciation by the straight-line method based on the following estimated useful lives:

 

     Years  

Land improvements

     5 to 20   

Buildings and leasehold improvements

     5 to 50   

Machinery and equipment

     3 to 15