Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Stock-Based Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan, Stock Plan And 2011 Incentive Plan) (Details) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Stock-Based Compensation [Abstract]    
Options, Outstanding 721,924  
Options, Awarded 305,968  
Options, Exercised  
Options, Forfeited (13,721)  
Options, Outstanding 1,014,171 721,924
Options, Exercisable 477,271  
Options, Expected to vest 1,014,171  
Weighted average exercise price per share, Outstanding $ 11.70  
Weighted average exercise price per share, Awarded 6.72  
Weighted average exercise price per share, Exercised  
Weighted average exercise price per share, Forfeited 10.02  
Weighted average exercise price per share, Outstanding 10.22 $ 11.70
Weighted average exercise price per share, Exercisable 11.67  
Weighted average exercise price per share, Expected to vest $ 10.22  
Options, Outstanding - Weighted average remaining contractual term (in years) 5 years 1 month 28 days 4 years 10 months 21 days
Options, Exercisable - Weighted average remaining contractual term (in years) 4 years 1 month 10 days  
Options, Expected to vest - Weighted average remaining contractual term (in years) 5 years 1 month 28 days