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Stock-Based Compensation (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended 16 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2011
Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2012
Option
Plan
Sep. 30, 2011
Mar. 16, 2012
Sep. 12, 2011
Apr. 25, 2011
Sep. 30, 2012
Stock Options [Member]
Sep. 30, 2011
Stock Options [Member]
Sep. 30, 2012
Stock Options [Member]
Sep. 30, 2011
Stock Options [Member]
Sep. 30, 2011
Warrant [Member]
Dec. 31, 2010
Warrant [Member]
Sep. 30, 2012
Warrant [Member]
Sep. 30, 2011
Warrant [Member]
Sep. 12, 2011
Warrant [Member]
Dec. 03, 2010
Warrant [Member]
Sep. 30, 2012
September 2011 Warrant [Member]
Sep. 30, 2011
September 2011 Warrant [Member]
Sep. 30, 2012
September 2011 Warrant [Member]
Sep. 30, 2011
September 2011 Warrant [Member]
Sep. 30, 2011
Five Year Stock Purchase Warrants [Member]
Sep. 30, 2011
Five Year Stock Purchase Warrants [Member]
Sep. 30, 2011
Three Year Stock Purchase Warrants [Member]
Sep. 30, 2012
2001 Non-Employee Director Stock Option Plan [Member]
Minimum [Member]
Sep. 30, 2012
2001 Non-Employee Director Stock Option Plan [Member]
Maximum [Member]
Sep. 30, 2012
1998 Non Officer Stock Option Plan and Equity Incentive Plan [Member]
Minimum [Member]
Sep. 30, 2012
1998 Non Officer Stock Option Plan and Equity Incentive Plan [Member]
Maximum [Member]
Stock-Based Compensation (Textual)                                                          
Options outstanding, vested and expected to vest, aggregate intrinsic value                 $ 0   $ 0                                    
Options outstanding, vested and expected to vest, outstanding, number                 1,516,200   1,516,200                                    
Stock option vesting period                                                   1 year 4 years 1 year 4 years
Stock option expiration period                                                   5 years 7 years   10 years
Share-based compensation expense                 572,000 17,000 2,900,000 87,000     25,000 74,000     9,000 2,000 28,000 2,000              
Addition warrant issued in period 50,000     72,469                                         20,000        
Warrant issued in period 50,000                       20,000 120,000                 80,000 80,000 20,000        
Addition Weighted average grant date fair value     $ 1.38 $ 1.38                                         $ 4.05        
Fair value of warrants             75,000           193,000     193,000   198,000                      
Common stock issuable upon exercise of warrants           200,000   50,000                                          
Excercise price of warrants per share     $ 3.13 $ 3.13       $ 1.00         $ 3.90     $ 3.90 $ 3.90 $ 1.625         $ 2.50 $ 2.50 $ 2.00        
Fair Value                         73,000     73,000                          
Fair Value Included in product research and development expense                               37,000                          
Warrant Exercise Price Value       100,007                                                  
Number of approved stock option plans       3                                                  
Number of equity incentive plans       2                                                  
Number of non-employee director stock option plan       1                                                  
Options granted to purchase of common stock to employee     45,000 1,145,000                                                  
Options granted to purchase of common stock to members of Board     0 360,000                                                  
Options life       7 years                                                  
Number of options vesting on grant date       0.3333                                                  
Vesting period of options following grant date       24 months                                                  
Amortized period of warrants   24 months 24 months 24 months 24 months                                                
Remaining vesting period of warrants       1 year 8 months 12 days                                                  
Warrant exercised to purchase common stock one     116,000 116,000                                                  
Warrant exercised to purchase common stock two     17,500 17,500                                                  
Conversion of warrant into common stock, shares converted     79,050 79,050   174,798                                              
Warrant total excercise price       $ 54,775