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Stock-Based Compensation (Details Textual) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Segment
Employees
Plan
Dec. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Mr. Mats Dahlin from Davisa Ltd. [Member]
Aug. 12, 2013
Mr. Mats Dahlin from Davisa Ltd. [Member]
Dec. 31, 2011
Minimum [Member]
Dec. 31, 2011
Maximum [Member]
Dec. 31, 2013
Stock Options [Member]
Employees
Dec. 31, 2012
Stock Options [Member]
Dec. 31, 2011
Stock Options [Member]
Apr. 04, 2013
Warrant [Member]
Dec. 31, 2010
Warrant [Member]
Dec. 31, 2012
Warrant [Member]
Dec. 31, 2011
Warrant [Member]
Dec. 03, 2010
Warrant [Member]
Dec. 31, 2011
Warrant [Member]
Legal Advisor [Member]
Dec. 31, 2011
Warrant [Member]
Employee [Member]
Dec. 31, 2011
Warrant [Member]
Engineering Consultant [Member]
Dec. 31, 2013
1996 Stock Option Plan [Member]
Dec. 31, 2013
1996 Stock Option Plan [Member]
Minimum [Member]
Dec. 31, 2013
1996 Stock Option Plan [Member]
Maximum [Member]
Dec. 31, 2013
1998 Non-Officer Stock Option Plan [Member]
Dec. 31, 2013
2006 Equity Incentive Plan [Member]
Dec. 31, 2013
2006 Equity Incentive Plan [Member]
Minimum [Member]
Dec. 31, 2013
2006 Equity Incentive Plan [Member]
Maximum [Member]
Dec. 31, 2013
2001 Non-Employee Director Stock Option Plan [Member]
Dec. 31, 2013
2001 Non-Employee Director Stock Option Plan [Member]
Minimum [Member]
Dec. 31, 2013
2001 Non-Employee Director Stock Option Plan [Member]
Maximum [Member]
Dec. 31, 2013
1998 Non Officer Stock Option Plan and Equity Incentive Plan [Member]
Minimum [Member]
Dec. 31, 2013
1998 Non Officer Stock Option Plan and Equity Incentive Plan [Member]
Maximum [Member]
Dec. 31, 2011
Five Year Stock Purchase Warrants [Member]
Dec. 31, 2011
Five Year Stock Purchase Warrants [Member]
Warrant [Member]
Dec. 31, 2013
Three Year Stock Purchase Warrants [Member]
Dec. 31, 2012
Three Year Stock Purchase Warrants [Member]
Dec. 31, 2011
Three Year Stock Purchase Warrants [Member]
Dec. 31, 2011
Three Year Stock Purchase Warrants One [Member]
Dec. 31, 2011
Three Year Stock Purchase Warrants Two [Member]
Stock-Based Compensation (Textual)                                                                          
Options outstanding, vested and expected to vest, aggregate intrinsic value $ 1,100,000             $ 2,906,724                                                          
Options outstanding, vested and expected to vest, outstanding, number 241,361             1,600,583                                                          
Stock option vesting period                                       1 year 4 years     1 year 4 years   1 year 4 years 1 year 4 years         24 months    
Stock option expiration date                                           2008 June 2006 January     2011 March                      
Stock option expiration period                                     10 years     10 years 10 years       5 years 7 years                  
Compensation expense related to the vesting of stock options               2,500,000 3,400,000 87,000     91,000 99,000                                              
Plan termination, effective date                                     Jan. 17, 2006     Jun. 15, 2008                              
Warrant issued in period                                                             80,000 422,830     20,000 20,000 20,000
Fair value of warrants                                                                     75,000    
Common stock issuable upon exercise of warrants 1,815,368 361,000     215,724             120,000                                                  
Exercise price of warrants per share                             $ 1.63                               $ 2.50 $ 3.13     $ 2.00 $ 4.05 $ 3.90
Fair value of warrants granted included in product research and development expenses                               193,000 37,000 73,000                             26,000 38,000 11,000    
Expected life (years)           29 days 3 years                                                            
Shares to be purchased                           120,000                                              
Fair value of vested warrants granted to employees                       198,000                                                  
Number of equity incentive plans 2                                                                        
Number of non-employee director stock option plan 1                                                                        
Options granted to purchase of common stock to consultants   169,000 0                                                                    
Options granted to purchase of common stock to employee 145,000 1,175,000 0                                                                    
Options granted to purchase of common stock to members of Board   360,000 0                                                                    
Vesting period of options following grant date     24 months                                                                    
Common stock issued upon exercise of common stock options 1,060,000             502,000                                                          
Stock based compensation options granted to purchase of common stock to employee fair value 748,000                                                                        
Number of employees 3             5                                                          
Recognition period of unamortized expense related to stock options and warrants 2 years 10 months 24 days                                                                        
Stock options vesting period description The options have a 7-year life and 1/3 of the options are vested on the one year anniversary date of grant with the remaining to vest monthly over the remaining 24-months.                                                                        
Share based compensation arrangement by share based payment award equity instruments options grants in period grant date fair value                     166,000                                                    
Warrants exercise price one   $ 3.13                 $ 1.00                                                    
Proceeds from exercise of warrants $ 714,000 $ 223,000 $ 515,000 $ 93,200             $ 40,000                                                    
Warrants exercised to purchase common stock                     40,000