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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

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, 2014 and December 31, 2013, respectively.

Award type		March 31, 2014			December 31, 2013
Stock options		993,677			1,160,464
Restricted stock units (time based)		1,799,901			1,542,990
Restricted stock units (performance based)		34,000			—
Stock appreciation rights		706,111			721,028
Market stock units		449,600			469,000

Market Stock Units Valuation Assumptions [Table Text Block]

The assumptions used to value the MSUs granted during the three months ended March 31, 2014 were as follows:

	Grant Date
	February 24, 2014		February 11, 2014
Volatility	51.13%		50.74%
Risk-free interest rate	0.66%		0.67%
Expected option life in years	2.85		2.89
Dividend yield	—		—

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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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