Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details)

v2.4.0.6
Stock Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Options      
Options outstanding at beginning of year (shares) 897,767 1,332,767 1,620,167
Granted (shares) 0 0 0
Exercised (shares) (282,082) (171,800) (133,400)
Cancelled (shares) (6,100) (263,200) (154,000)
Outstanding at end of year (shares) 609,585 897,767 1,332,767
Weighted Average Exercise Price      
Options outstanding at beginning of year (shares) $ 23.56 $ 23.80 $ 23.19
Exercised (shares) $ 15.12 $ 15.21 $ 15.46
Cancelled (shares) $ 25.73 $ 30.24 $ 24.58
Outstanding at end of year (shares) $ 27.44 $ 23.56 $ 23.80
Options outstanding at end of year, additional disclosures      
Weighted Average Remaining Contractual Life 1 year 10 months 13 days    
Aggregate Intrinsic Value $ 7,376    
Vested and expected to vest at end of year      
Vested and expected to vest at end of year (shares) 608,405    
Weighted Average Exercise Price (shares) $ 27.47    
Weighted Average Remaining Contractual Life 1 year 10 months 13 days    
Aggregate Intrinsic Value 7,350    
Exercisable at end of year      
Options (shares) 471,760 550,359 740,376
Weighted Average Exercise Price (shares) $ 30.93 $ 26.29 $ 26.79
Weighted Average Remaining Contractual Life 1 year 7 months 17 days    
Aggregate Intrinsic Value $ 4,363    
Price range of options exercised - lower range limit $ 8.06 $ 8.06 $ 8.06
Price range of options exercised - upper range limit $ 34.30 $ 21.10 $ 21.10
Price range of options outstanding - lower range limit $ 8.06 $ 8.06 $ 8.06
Price range of options outstanding - upper range limit $ 44.44 $ 44.44 $ 44.44
Total shares reserved for existing or future grants at end of year 1,997,382