Annual report pursuant to Section 13 and 15(d)

Stock Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan, Stock Plan And 2011 Incentive Plan) (Details)

v3.7.0.1
Stock Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan, Stock Plan And 2011 Incentive Plan) (Details) - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Stock Compensation [Abstract]        
Options, Outstanding 721,924 540,404 309,439  
Options, Awarded 325,968 248,258 317,722  
Options, Exercised   (12,000) (12,000)  
Options, Forfeited (124,962) (54,738) (74,757)  
Options, Outstanding 922,930 721,924 540,404 309,439
Options, Exercisable 501,599      
Options, Expected to vest 922,930      
Weighted average exercise price per share, Outstanding $ 11.70 $ 11.90 $ 11.66  
Weighted average exercise price per share, Awarded 6.66 11.31 12.30  
Weighted average exercise price per share, Exercised   10.21 8.28  
Weighted average exercise price per share, Forfeited 10.39 12.21 13.20  
Weighted average exercise price per share, Outstanding 10.10 $ 11.70 $ 11.90 $ 11.66
Weighted average exercise price per share, Exercisable 11.30      
Weighted average exercise price per share, Expected to vest $ 10.10      
Options, Outstanding - Weighted average remaining contractual term (in years) 4 years 10 months 24 days 4 years 10 months 21 days 5 years 1 month 17 days 4 years 1 month 17 days
Options, Exercisable - Weighted average remaining contractual term (in years) 4 years 2 months 5 days      
Options, Expected to vest - Weighted average remaining contractual term (in years) 4 years 10 months 24 days