v2.4.0.6
Stock-Based Compensation - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option and incentive plan, maximum issuable shares 1,000,000   1,000,000  
Stock option and incentive plan, options granted to employees vesting period     5 years  
Stock option expense $ 24,000 $ 51,000 $ 76,000 $ 152,000
Stock option expense, net of tax 24,000 51,000 76,000 152,000
Restricted Stock or Unit Expense 36,000,000   36,000,000  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized $ 84,000,000   $ 84,000,000  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition     7 months