XML 65 R111.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stock Compensation Plan - Summary of Stock Option Activity (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Beginning Balance (shares) 8,100 264,500 987,900
Forfeited and expired (shares) (7,300) (256,400) (723,400)
Ending Balance (shares) 800 8,100 264,500
Share-Based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Grant Date Fair Value [Roll Forward]      
Beginning Balance (usd per share) $ 29.91 $ 31.02 $ 31.68
Forfeited and expired (usd per share) $ 30.17 $ 31.06 $ 31.92
Ending Balance (usd per share) $ 27.50 $ 29.91 $ 31.02