Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Stock Option Activity And Related Information) (Details)

v2.4.0.6
Stock Based Compensation (Stock Option Activity And Related Information) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Stock Based Compensation [Abstract]      
Outstanding at beginning of year, Options 387,318 397,468 360,688
Granted, Options 20,000 20,000 51,500
Exercised, Options (28,050) (25,650) (4,225)
Forfeited, Options (15,000) (4,500) (10,495)
Outstanding at end of year, Options 364,268 387,318 397,468
Exercisable at end of year, Options 220,293 197,447 159,701
Outstanding at beginning of year, Weighted average exercise price $ 41.72 $ 40.78 $ 43.06
Granted, Weighted average exercise price $ 40.47 $ 35.49 $ 23.99
Exercised, Weighted average exercise price $ 25.96 $ 23.18 $ 21.46
Forfeited, Weighted average exercise price $ 44.29 $ 36.86 $ 44.53
Outstanding at end of year, Weighted average exercise price $ 42.76 $ 41.72 $ 40.78
Exercisable at end of year, Weighted average exercise price $ 44.25 $ 42.89 $ 40.71