Annual report pursuant to Section 13 and 15(d)

Stock Plans (Details Textual)

v2.4.0.6
Stock Plans (Details Textual) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended
Jul. 31, 2002
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2008
Aug. 31, 2005
2002 Plan [Member]
Dec. 31, 2012
2002 Plan [Member]
Aug. 31, 2001
2001 Non-Qualified Plan [Member]
Dec. 31, 2012
2001 Non-Qualified Plan [Member]
Dec. 31, 2012
Stock Options [Member]
Dec. 31, 2011
Stock Options [Member]
Dec. 31, 2010
Stock Options [Member]
Dec. 31, 2009
Stock Options [Member]
Dec. 31, 2012
Restricted stock [Member]
Dec. 31, 2008
Non Employee Director [Member]
Stock Plans (Textual) [Abstract]                              
Increase the number of Shares issuable pursuant to grants maximum           3,000,000                  
Granted, number of options and awards outstanding                   1,718,000 734,000 150,000      
Purchase of shares of our common stock                   1,718,000 734,000 150,000      
Total shares of our common stock were authorized for issuance to employees 7,400,000         2,000,000   1,750,000              
Period of expiration of option plans 10 years             10 years              
Percentage of exercise price of any options granted 100.00%             100.00%              
Options or awards were granted   1,718,000               1,718,000          
Restricted stock awarded to employees                           0  
Options to purchase common stock outstanding   6,842,000 5,414,000       4,280,153   1,199,500 6,842,000 5,595,000 5,115,000 6,090,000    
Stock option plan expired 2012-07       2011-08                    
Non-employee directors are entitled to receive stock option upon becoming a director                             10,000
Annual grant of options                             20,000
Annual grant of options for each committee                             5,000
Stock Plans (Additional Textual) [Abstract]                              
Total shares of our common stock were authorized for issuance to employees   125,000,000 125,000,000                        
Biennial grant of options to non-employee minimum   $ 0.69                          
Biennial grant of options to non-employee maximum   $ 4.06                          
Weighted-average fair value of options and awards granted   $ 1.09 $ 1.38 $ 2.24                      
Granted options to employees   $ 2,581,000 $ 1,177,000 $ 733,000                      
Awarded shares of restricted stock to employees   0 181,000                        
Forfeited, options                     55,000        
Grantee shareholder 10.00%                            
Maximum term 5 years                            
Options generally vest one year 25.00%                            
Option generally vest remainder ratably 3 years                            
Exercise price of the fair market value 110.00%                            
Number exercisable   6,034,000 4,300,000                        
Recognized tax benefit related to stock-based compensation expense   0                          
Unrecognized compensation expense related to non-vested stock options   300,000                          
Weighted-average period for recognizing non-vested stock option   2 months 5 days                          
Unrecognized compensation expense related to non vested awards   $ 0