XML 27 R57.htm IDEA: XBRL DOCUMENT v2.4.0.8
Retirement and Security Bonus Plans (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]        
401k Employer matching contributions $ 1.7 $ 2.7    
Document Period End Date   Dec. 31, 2013    
Employer contributions, profit sharing retirement plan   0.1 0.5 2.5
Security bonus plan
        
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]        
Initial vesting percentage   25.00%    
Minimum vesting period   5 years    
Annual vesting percentage after initial period   5.00%    
Expense recognized   $ 0.7 $ 2.1 $ 2.1