XML 12 R39.htm IDEA: XBRL DOCUMENT v2.4.0.8
Share-Based Compensation Plans - Summary of Activity Related to Stock Options Granted under Company's Incentive Plan (Detail) (Employee Stock Option [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Employee Stock Option [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total Shares outstanding, Beginning balance 3,023
Total Shares, Granted   
Total Shares, Exercised (470)
Total Shares, Forfeited, canceled or expired (13)
Total Shares outstanding, Ending balance 2,540
Total Shares, Exercisable 1,940
Total Shares, Available for issuance 2,108
Weighted Average Exercise Price per Share Outstanding, Beginning balance $ 14.80
Weighted Average Exercise Price per Share, Granted   
Weighted Average Exercise Price per Share, Exercised $ 14.12
Weighted Average Exercise Price per Share, Forfeited, canceled or expired $ 17.25
Weighted Average Exercise Price per Share Outstanding, Ending balance $ 14.91
Weighted Average Exercise Price per Share, Exercisable $ 14.23
Weighted Average Remaining Contractual Term (Years), Outstanding 5 years 4 months 21 days
Weighted Average Remaining Contractual Term (Years), Exercisable 5 years 18 days
Aggregate Intrinsic Value, Outstanding $ 78,903
Aggregate Intrinsic Value, Exercisable $ 61,563