XML 25 R52.htm IDEA: XBRL DOCUMENT v3.3.0.814
Equity Incentive Plans and Stock-Based Compensation (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Apr. 23, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Employee Stock [Member]          
Stock-Based Compensation          
Stock-based compensation   $ 0.3 $ 0.4 $ 1.2 $ 2.2
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 2,000,000        
Shares available for grant          
Shares available, at the end of the period   2,607,944   2,607,944  
Stock-Based Incentive Compensation Plans          
Stock-Based Compensation          
Number of shares reserved under the 2006 Purchase Plan 4,000,000 35,400,000   35,400,000  
Shares available for grant          
Shares available, at the beginning of the year       10,724,228  
Increase in shares approved for issuance       4,000,000  
Stock options granted (in shares)       (362,335)  
Stock options forfeited (in shares)       1,401,928  
Stock options expired under former plans (in shares)       (619,422)  
Nonvested equity stock and stock units granted (in shares) [1],[2]       (2,747,667)  
Nonvested equity stock and stock units forfeited (in shares) [2]       163,984  
Shares available, at the end of the period   12,560,716   12,560,716  
Conversion factor used to calculate the decrease in the number of shares available for grant resulting from the grant of restricted stock awards   1.5   1.5  
Conversion factor used to calculate the increase in the number of shares available for grant resulting from the forfeiture of restricted stock awards   1.5   1.5  
Restricted Stock and Stock Units [Member]          
Stock-Based Compensation          
Stock-based compensation   $ 1.8 $ 0.7 $ 4.7 $ 2.1
Potential Additional Performance Stock Units [Domain]          
Shares available for grant          
Nonvested equity stock and stock units granted (in shares) [1],[2]       238,980  
Performance Shares [Member] | Restricted Stock and Stock Units [Member]          
Stock-Based Compensation          
Stock-based compensation   $ 0.3   $ 0.8  
[1] (2)Amount includes 238,980 shares that have been reserved for potential future issuance related to certain performance unit awards discussed under the section titled "Nonvested Equity Stock and Stock Units" below.
[2] For purposes of determining the number of shares available for grant under the 2015 Plan (and previously the 2006 Plan) against the maximum number of shares authorized, each share of restricted stock granted reduces the number of shares available for grant by 1.5 shares and each share of restricted stock forfeited increases shares available for grant by 1.5 shares.