Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation And Other Benefit Plans (Stock Option Activity) (Details)

v3.10.0.1
Stock-Based Compensation And Other Benefit Plans (Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock-Based Compensation And Other Benefit Plans [Abstract]      
Number of Shares Underlying Options, Outstanding at January 1, 2018 2,597,000    
Number of Shares Underlying Options, Granted 671,000    
Number of Shares Underlying Options, Exercised (528,000)   0
Number of Shares Underlying Options, Forfeited/expired (139,000)    
Number of Shares Underlying Options, Outstanding at December 31, 2018 2,601,000 2,597,000  
Number of Shares Underlying Options, Exercisable at December 31, 2018 1,649,000    
Weighted Average Exercise Price Per Share, Outstanding at January 1, 2018 $ 1.77    
Weighted Average Exercise Price Per Share, Granted 1.05 $ 0.99 $ 1.14
Weighted Average Exercise Price Per Share, Exercised 1.02    
Weighted Average Exercise Price Per Share, Forfeited/expired 5.60    
Weighted Average Exercise Price Per Share, Outstanding at December 31, 2018 1.54 $ 1.77  
Weighted Average Exercise Price Per Share, Exercisable at December 31, 2018 $ 1.90    
Weighted Average Remaining Contractual Term, Outstanding balance 2 years 3 months 4 days    
Weighted Average Remaining Contractual Term, Exercisable at December 31, 2018 2 years 8 months 9 days    
Aggregate Intrinsic Value, Outstanding at December 31, 2018 $ 989    
Aggregate Intrinsic Value, Exercisable at December 31, 2018 $ 499