Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Narratives) (Details)

v2.4.0.6
Stockholders' Equity (Narratives) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 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  
Options granted 0 0
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Fair Value $ 32,000 $ 474,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value 134,000 768,000
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options 301,000 1,400,000
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized share-based compensation expense 84,000  
Unvested stock options 32,000  
Weighted average period for recognition of unvested shares 1 year 1 month 6 days  
Restricted Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized share-based compensation expense $ 10,100,000  
Unvested restricted stock awards 1,700,000  
Weighted average period for recognition of unvested shares 2 years 3 months 18 days