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Stock-Based Compensation (Stock Option Plans) (Details) - $ / shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Balance, Beginning of Period, Shares 29,500 47,500
Options Granted, Shares 0 0
Options Exercised, Shares 0 0
Options Forfeited, Shares (3,500) (18,000)
Balance, End of Period, Shares 26,000 29,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Balance, Beginning of Period, Weighted Avg. Exercise Price $ 23.55 $ 22.41
Options Granted, Weighted Avg. Exercise Price 0.00  
Options Exercised, Weighted Avg. Exercise Price 0.00  
Options Forfeited, Weighted Avg. Exercise Price 23.91 20.55
Balance, End of Period, Weighted Avg. Exercise Price $ 23.50 $ 23.55
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]    
Options Exercisable, Shares 20,600 18,900
Options Available For Grant 50,000 50,000