Loss Per Share	12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]
Loss Per Share	Loss Per Share We present both basic and diluted EPS amounts. Basic EPS is calculated by dividing net loss by the weighted average number of common shares outstanding during the year. We calculate earnings per share using the two class method where unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities and shall be included in the computation of earnings per share. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Participating securities do not participate in losses and therefore are excluded from the calculation of loss per share. In periods with net income, diluted EPS is based upon the weighted average number of common and common equivalent shares outstanding during the year which is calculated using the treasury stock method for stock options and restricted stock units, the if-converted method for convertible notes, and assumes conversion of our convertible senior notes based on the related fiscal year financial data. In periods with net loss, diluted EPS uses the same shares as basic EPS with no consideration of the if-converted method on the numerator. Given our net loss position for the years ended December 31, 2013, 2012, and 2011, there are no dilutive securities for these periods. Antidilutive options and share units were 691,000, 771,700 and 302,700 at December 31, 2013, 2012, and 2011, respectively. Antidilutive 6% convertible senior note conversion shares, including the make whole premium, were convertible into 17,600 common shares at December 31, 2013, 2012, and 2011. Antidilutive Series A convertible note conversion shares were 5,226,000, 4,740,000 and 4,300,000 at December 31, 2013, 2012, and 2011. Antidilutive Series B convertible note conversion shares, including the make whole premiums, were 4,219,000, 6,149,000 and 7,261,000 at December 31, 2013, 2012, and 2011.

Loss Per Share

We present both basic and diluted EPS amounts. Basic EPS is calculated by dividing net loss by the weighted average number of common shares outstanding during the year. We calculate earnings per share using the two class method where unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are considered participating securities and shall be included in the computation of earnings per share. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Participating securities do not participate in losses and therefore are excluded from the calculation of loss per share.

In periods with net income, diluted EPS is based upon the weighted average number of common and common equivalent shares outstanding during the year which is calculated using the treasury stock method for stock options and restricted stock units, the if-converted method for convertible notes, and assumes conversion of our convertible senior notes based on the related fiscal year financial data. In periods with net loss, diluted EPS uses the same shares as basic EPS with no consideration of the if-converted method on the numerator.

Given our net loss position for the years ended December 31, 2013, 2012, and 2011, there are no dilutive securities for these periods. Antidilutive options and share units were 691,000, 771,700 and 302,700 at December 31, 2013, 2012, and 2011, respectively. Antidilutive 6% convertible senior note conversion shares, including the make whole premium, were convertible into 17,600 common shares at December 31, 2013, 2012, and 2011. Antidilutive Series A convertible note conversion shares were 5,226,000, 4,740,000 and 4,300,000 at December 31, 2013, 2012, and 2011. Antidilutive Series B convertible note conversion shares, including the make whole premiums, were 4,219,000, 6,149,000 and 7,261,000 at December 31, 2013, 2012, and 2011.