Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan And Stock Plan) (Details)

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Stock-Based Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan And Stock Plan) (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Stock-Based Compensation [Abstract]    
Options, Outstanding 309,439  
Options, Awarded 134,271  
Options, Forfeited (20,293)  
Options, Outstanding 423,417 309,439
Options, Exercisable at March 31, 2014 235,135  
Options, Expected to vest March 31, 2014 423,417  
Weighted average exercise price per share, Outstanding $ 11.66  
Weighted average exercise price per share, Awarded $ 12.97  
Weighted average exercise price per share, Forfeited $ 13.78  
Weighted average exercise price per share, Outstanding $ 11.97 $ 11.66
Weighted average exercise price per share, Exercisable at March 31, 2014 $ 11.57  
Weighted average exercise price per share, Expected to vest March 31, 2014 $ 11.97  
Options, Outstanding - Weighted average remaining contractual term 4 years 10 months 2 days 4 years 1 month 17 days
Options, Exercisable at March 31, 2014 - Weighted average remaining contractual term 3 years 5 months 12 days  
Options, Expected to vest March 31, 2014 - Weighted average remaining contractual term 4 years 10 months 2 days