Loss Per Share	12 Months Ended
Dec. 31, 2012
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. 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, 2012, 2011, and 2010, there are no dilutive securities for these periods. Antidilutive options and share units were 771,700, 302,700 and 37,300 at December 31, 2012, 2011, and 2010, respectively. Antidilutive 6% convertible senior note conversion shares, including the make whole premium, were convertible into 17,600, 17,600 and 18,300 common shares at December 31, 2012, 2011, and 2010, respectively. Antidilutive Series A convertible note conversion shares were 4,740,000 and 4,300,000 at December 31, 2012 and 2011, with no corresponding amount at December 31, 2010. Antidilutive Series B convertible note conversion shares, including the make whole premiums, were 6,149,000 and 7,261,000 at December 31, 2012 and 2011, with no corresponding amount at December 31, 2010.

Loss Per Share

12 Months Ended

Dec. 31, 2012

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. 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, 2012, 2011, and 2010, there are no dilutive securities for these periods. Antidilutive options and share units were 771,700, 302,700 and 37,300 at December 31, 2012, 2011, and 2010, respectively. Antidilutive 6% convertible senior note conversion shares, including the make whole premium, were convertible into 17,600, 17,600 and 18,300 common shares at December 31, 2012, 2011, and 2010, respectively. Antidilutive Series A convertible note conversion shares were 4,740,000 and 4,300,000 at December 31, 2012 and 2011, with no corresponding amount at December 31, 2010. Antidilutive Series B convertible note conversion shares, including the make whole premiums, were 6,149,000 and 7,261,000 at December 31, 2012 and 2011, with no corresponding amount at December 31, 2010.