Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Narratives) (Details)

v2.4.0.8
Stockholders' Equity (Narratives) (Details) (USD $)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 15,700,000  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 3,100,000  
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options $ 300,000 $ 1,400,000
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Fair Value 23,000 500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value 100,000 800,000
Unrecognized share-based compensation expense 59,000  
Unvested stock options 26,000  
Weighted average period for recognition of unvested shares 1 year 0 months 0 days  
Restricted Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized share-based compensation expense $ 8,500,000  
Unvested restricted stock awards 1,700,000  
Weighted average period for recognition of unvested shares 2 years 0 months 0 days