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Options and Awards Lead Paragraphs (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Stock Issued or Granted During Period, Share-based Compensation [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 2,672    
Share-based Compensation Arrangement by Share-Based Payment Award, Options, Fair Value Assumptions, Forfeiture Rate 9.25%    
Options Granted 637 2,058 910
Director [Member]      
Stock Issued or Granted During Period, Share-based Compensation [Abstract]      
Stock Issued During Period, Shares, Restricted Stock Award, Gross 323 56 186
2001 Plan [Domain]      
Stock Issued or Granted During Period, Share-based Compensation [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 638 638 638
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Upon Implementation of Plan 3,960    
2005 Plan [Domain]      
Stock Issued or Granted During Period, Share-based Compensation [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 294 294 294
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Upon Implementation of Plan 1,000    
Share-Based Compensation Arrangement by Shared-Based Payment Award, Repurchased 800    
2007 Plan [Domain]      
Stock Issued or Granted During Period, Share-based Compensation [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 1,740 1,534 1,434
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Upon Implementation of Plan 2,000