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Convertible Preferred Stock and Stockholders’ Equity (Details Narrative) - USD ($)
1 Months Ended 12 Months Ended
Feb. 23, 2021
May 25, 2020
Aug. 07, 2019
May 31, 2019
Sep. 30, 2016
Jun. 30, 2014
Dec. 31, 2021
Dec. 31, 2020
Sep. 29, 2021
Mar. 05, 2018
Feb. 28, 2018
Subsidiary, Sale of Stock [Line Items]                      
Common stock, voting rights             The holders of common stock are entitled to one vote for each share held        
Payments of dividends common stock             $ 0        
Common stock, par or stated value per share             $ 0.001 $ 0.001      
Convertible preferred stock, par value             $ 0.001 $ 0.001      
Stock-based compensation expenses             $ 9,362,907 $ 3,169,348      
Unrecognized stock-based compensation expense             $ 5,100,000        
Common Stock, Capital Shares Reserved for Future Issuance             68,761,350 53,187,679      
Weighted average amortization period of total compensation cost not yet recognized             four years        
Number of options and stock appreciation rights outstanding             2,818,012 2,456,979      
Warrants outstanding             0   15,385    
Restricted Stock Units (RSUs) [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares granted             378,204        
2012 Stock Incentive Plan [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Stock plan expiration date             Mar. 25, 2012        
2012 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share vesting percentage             25.00%        
Stock vesting period             3 years        
2012 Stock Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share expiration period             10 years        
Share vesting percentage             25.00%        
Stock vesting period             3 years        
2012 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Stock vesting period             4 years        
Aggregate intrinsic value, outstanding             $ 7,200,000        
Aggregate intrinsic value, vested             $ 2,400,000        
2012 Stock Incentive Plan [Member] | Stock Options and Stock Appreciation Rights (SARs) [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Contractual term             7 years 9 months 7 days        
Number of options and stock appreciation rights outstanding             2,818,012        
Number of options and stock appreciation rights, Exercisable, Number             1,229,610        
Number of options and stock appreciation rights, weighted average exercise price             $ 2.33        
Number of options and stock appreciation rights remaining contractual term             6 years 8 months 12 days        
Outstanding, intrinsic value             $ 6,600,000 $ 5,900,000      
Share Price             $ 6.20 $ 5.09      
Options number of shares vested             1,229,610 884,654      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value             $ 1,900,000 $ 400,000      
Options grants weighted average grant date fair value             $ 7.10 $ 4.49      
Stock Award Plans [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Common Stock, Capital Shares Reserved for Future Issuance             4,909,848 2,054,941      
2009 Employee Stock Purchase Plan ("ESPP") [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Common Stock, Capital Shares Reserved for Future Issuance             209,437        
Number of additional shares authorized       250,000   250,000          
Eligible employees term             3 months        
Maximum purchase percentage of employees compensation             15.00%        
Maximum fair value of shares subject to repurchase obligation             $ 25,000        
Maximum fair value percentage of shares subject to repurchase obligation             95.00%        
Non-employee Directors [Member] | 2012 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Share expiration period             10 years        
Purchase Price of common stock, percent             100.00%        
Director [Member] | 2012 Stock Incentive Plan [Member] | Minimum [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Stock vesting period             1 year        
Director [Member] | 2012 Stock Incentive Plan [Member] | Maximum [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Stock vesting period             5 years        
PSU Agreement [Member] | Mr. Fischel [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Performance award term 10 years                    
Number of shares granted 13,000,000                    
Maximum market capitalization milestone, amount $ 1,000,000,000.0                    
Increase in market capitalization milestone, amount $ 500,000,000                    
Award vesting rights, description Each tranche represents a portion of the PSUs covering the number of shares outlined in the table above. Each tranche vests upon (i) satisfaction of the market capitalization milestones and (ii) continued employment as CEO of the Company from the grant date through December 31, 2030. Absent an earlier termination, the PSUs will expire on December 31, 2030. If our CEO ceases employment as CEO of the Company for any reason including death, disability, termination for cause or without cause (as defined in the award agreement), or if he voluntary terminates after service as CEO for at least five years, the remaining service period will be waived and he will retain any PSUs that have vested through the date of termination.                    
Stock-based compensation expenses             $ 6,100,000        
Unrecognized stock-based compensation expense             $ 51,300,000        
PSU Agreement [Member] | Mr. Fischel [Member] | Share Based Compensation Award Tranche Ten [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Number of shares granted 1,000,000                    
Maximum market capitalization milestone, amount $ 5,500,000,000                    
Series A Convertible Preferred Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Sale of stock, number of shares sold         24,000            
Convertible preferred stock, par value         $ 1,000            
Preferred stock, par value         0.001            
Redemption price per share         $ 0.65         $ 0.28 $ 0.70
Common stock issuable from warrants         36,923,078            
Preferred stock dividend rate         6.00%            
Preferred stock redemption, triggering event, percent of common stock sold threshold         50.00%            
Common Stock, Capital Shares Reserved for Future Issuance             45,031,944 45,278,096      
Warrant [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Unexercised warrants         15,385            
Common Stock, Capital Shares Reserved for Future Issuance             15,385      
Direct Registered Offering [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Sale of stock, consideration received on transaction   $ 15,000,000.0                  
Direct Registered Offering [Member] | Common Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Sale of stock, number of shares sold   3,658,537                  
Common stock, par or stated value per share   $ 0.001                  
Sale of stock, price per share   $ 4.10                  
Private Placement [Member] | Series B Convertible Preferred Stock [Member]                      
Subsidiary, Sale of Stock [Line Items]                      
Sale of stock, number of shares sold     5,610,121                
Convertible preferred stock, par value     $ 0.001                
Convertible securities, conversion price per share     $ 2.05