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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Awards outstanding [Table Text Block]

The following table presents the number of shares or units outstanding for each award type as of March 31, 2013 and December 31, 2012, respectively.

Award type		March 31, 2013			December 31, 2012
Stock options		1,343,710			1,474,828
Restricted stock units		1,662,751			1,182,726
Stock appreciation rights		746,225			789,637
Market share units		456,000			205,000

St

Market Stock Units Valuation Assumptions [Table Text Block]

The assumptions used to value the MSUs granted during the three months ended March 31, 2013 were as follows:

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Schedule of awards outstanding for each share-based compansation award type.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of Market Stock Units which are performance-based awards that vest based upon the Company's relative shareholder return.

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