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Shareholders' Equity (Summary Of Restricted Stock Activity) (Details) (Restricted stock [Member], USD $)
3 Months Ended
Mar. 31, 2014
Restricted stock [Member]
 
Number of Shares [Roll Forward]  
Outstanding, Number of Shares, Beginning Balance 27,492
Granted, Number of Shares 0
Forfeited, Number of Shares (1,507)
Vested, number of shares (5,872)
Outstanding, Number of Shares, Ending Balance 20,113
Weighted Average Fair Value Per Share [Roll Forward]  
Outstanding, weighted average fair value per share, beginning of period $ 33.91
Granted, weighted average fair value per share $ 0.00
Forfeited, Weighted Average Fair Value Per Share $ 35.89
Vested, Weighted Average Fair Value Per Share $ 33.60
Non-vested, weighted average fair value per share, end of period $ 33.85
Vested, aggregate intrinsic value $ 403,113