XML 71 R59.htm IDEA: XBRL DOCUMENT v3.4.0.3
Employee Benefit Plans (Summary Of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Options Outstanding, beginning balance (in shares) 95,015 167,554
Options, Granted (in shares) 24,348 12,961
Options, Exercised (in shares) 0 (28,500)
Options, Forfeited (in shares) 0 0
Options Outstanding, ending balance (in shares) 119,363 152,015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Weighted-Average Exercise Price, Outstanding, beginning balance (in dollars per share) $ 38.38 $ 36.74
Weighted-Average Exercise Price, Granted (in dollars per share) 43.73 46.41
Weighted-Average Exercise Price, Exercised (in dollars per share) 0.00 34.40
Weighted-Average Exercise Price, Forfeited (in dollars per share) 0.00 0.00
Weighted-Average Exercise Price, Outstanding, ending balance (in dollars per share) $ 39.49 $ 38.01
Exercisable (shares) 35,750 76,750
Exercisable, Weighted average exercise price (US$ per share) $ 34.79 $ 36.65
Proceeds from Stock Options Exercised $ 0 $ 1,312
Intrinsic value of stock options exercised 0 330
Allocated Share-based Compensation Expense 60 $ 51
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 560  
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 11 months