Annual report pursuant to Section 13 and 15(d)

Stock Plans and Management Compensation (Details 3)

v2.4.0.6
Stock Plans and Management Compensation (Details 3) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Unvested performance based awards 22
Percentage of premium paid out in deferred company common stock 20.00%
Performance Awards [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation expense 2.2
Weighted average price at grant date (in dollars per share) 26.81
Risk-free interest rate 0.40%
Dividend yield 0.20%
Volatility factor 67.90%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Outstanding at January 1 0
Granted 99
Forfeited (3)
Outstanding at December 31 96
Unrecognized compensation cost 0.4
Unrecognized compensation cost, period for recognition 4 months 24 days
Performance Awards [Member] | Minimum [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average expected life (in years) 2 years 10 months 24 days