Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Summary Of Stock Options Outstanding) (Details)

v3.7.0.1
Stock-Based Compensation (Summary Of Stock Options Outstanding) (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Number of options, Exercised (25,000)  
Number of options, Oustanding 1,937,871  
Stock Option [Member]    
Number of options, Oustanding 1,690,037  
Number of Options, Granted 393,260  
Number of options, Exercised (25,000)  
Number of options, Expired (15,000)  
Number of options, Cancelled (105,426)  
Number of options, Oustanding 1,937,871 1,690,037
Weighted average exercise price, Outstanding $ 6.20  
Weighted average exercise price, Granted 2.46  
Weighted average exercise price, Exercised 3.10  
Weighted average exercise price, Expired 16.07  
Weighted average exercise price, Cancelled 3.77  
Weighted average exercise price, Outstanding $ 5.54 $ 6.20
Weighted average remaining contractual term, Outstanding 7 years 4 months 24 days 7 years 3 months 18 days
Aggregate intrinsic value, Outstanding $ 342,455  
Number of options, Exercisable 1,120,784  
Weighted average exercise price, Exercisable $ 6.73  
Weighted average remaining contractual term, Exercisable 6 years 3 months 18 days  
Aggregate intrinsic value, Exercisable $ 6,858