Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Stock-Based Compensation And Other Benefit Plans (Stock Option Activity) (Details) - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Stock-Based Compensation And Other Benefit Plans [Abstract]      
Number of Shares Underlying Options, Outstanding at beginning of period 4,144    
Number of Shares Underlying Options, Granted 1,894    
Number of Shares Underlying Options, Forfeited/expired (3,394)    
Number of Shares Underlying Options, Outstanding at end of period 2,644 4,144  
Number of Shares Underlying Options, Exercisable at end of period 1,622    
Weighted Average Exercise Price Per Share, Outstanding at beginning of period $ 6.41    
Weighted Average Exercise Price Per Share, Granted 1.14 $ 4.41 $ 7.05
Weighted Average Exercise Price Per Share, Forfeited/expired 5.52    
Weighted Average Exercise Price Per Share, Outstanding at end of period 3.92 $ 6.41  
Weighted Average Exercise Price Per Share, Exercisable at end of period $ 5.35    
Weighted Average Remaining Contractual Term, Outstanding balance 2 years 11 months 23 days    
Weighted Average Remaining Contractual Term, Exercisable at end of period 2 years 2 months 5 days