Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Summary Of Stock Option Activity) (Details)

v2.4.0.6
Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Options outstanding at beginning of period, Shares 356,241 458,241 508,630  
Granted, Shares 0 0 0  
Exercised, Shares (21,000) (102,000) (48,889)  
Forfeited/expired, Shares 0 0 (1,500)  
Options Outstanding end of period, Shares 335,241 356,241 458,241 508,630
Options exercisable at December 31, 2012, Shares 335,241      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]        
Options outstanding at beginning of period, Weighted Average Exercise Price per Share (usd per share) $ 6.51 $ 7.23 $ 7.14  
Granted, Weighted Average Exercise Price (usd per share) $ 0.00 $ 0.00 $ 0.00  
Exercised, Weighted Average Exercise Price per Share (usd per share) $ 8.80 $ 9.74 $ 6.46  
Forfeited/expired, Weighted Average Exercise Price per Share (usd per share) $ 0.00 $ 0.00 $ 2.00  
Options Outstanding end of period, Weighted Average Exercise Price per Share (usd per share) $ 6.37 $ 6.51 $ 7.23 $ 7.14
Options exercisable at December 31, 2012, Weighted Average Exercise Price per Share (usd per share) $ 6.37      
Options Outstanding, Weighted Average Remaining Contractual Term 2 years 4 months 21 days 3 years 4 months 28 days 4 years 5 months 23 days 5 years 4 months 17 days
Options exercisable at December 31, 2011, Weighted Average Remaining Contractual Term 2 years 4 months 21 days      
Options Outstanding, Aggregate Intrinsic Value $ 10,678 $ 8,172 $ 6,621 $ 2,192
Exercised, Aggregate Intrinsic Value 628 2,308 545  
Options exercisable at December 31, 2011, Aggregate Intrinsic Value $ 10,678