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Summary of Exercise Price of Employee Stock Options Outstanding (Details)
3 Months Ended
Mar. 31, 2023
$ / shares
shares
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Stock options, outstanding | shares 234,439,167
Stock options, weighted average remaining life 1 year 2 months 15 days
Stock options, weighted average exercise price $ 0.0362
Stock options, excercisable | shares 107,790,004
Stock options, weighted average exercise price, exercisable $ 0.0325
Stock options, weighted average remaining life, exercisable 1 year 1 month 20 days
Exercise Price Range One [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Exercise price, lower range limit $ 0.018
Exercise price, upper range limit $ 0.0225
Stock options, outstanding | shares 70,730,020
Stock options, weighted average remaining life 2 years
Stock options, weighted average exercise price $ 0.0182
Stock options, excercisable | shares 45,730,020
Stock options, weighted average exercise price, exercisable $ 0.0181
Stock options, weighted average remaining life, exercisable 1 year 7 months 13 days
Exercise Price Range Two [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Exercise price, lower range limit $ 0.0229
Exercise price, upper range limit $ 0.0325
Stock options, outstanding | shares 5,093,254
Stock options, weighted average remaining life 4 years 3 months 7 days
Stock options, weighted average exercise price $ 0.0268
Stock options, excercisable | shares 5,024,504
Stock options, weighted average exercise price, exercisable $ 0.0267
Stock options, weighted average remaining life, exercisable 4 years 3 months 14 days
Exercise Price Range Three [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Exercise price, lower range limit $ 0.0360
Exercise price, upper range limit $ 0.0425
Stock options, outstanding | shares 25,530,893
Stock options, weighted average remaining life 3 years 3 months 25 days
Stock options, weighted average exercise price $ 0.0398
Stock options, excercisable | shares 6,166,730
Stock options, weighted average exercise price, exercisable $ 0.0396
Stock options, weighted average remaining life, exercisable 3 years 3 months 3 days
Exercise Price Range Four [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Exercise price, lower range limit $ 0.0440
Exercise price, upper range limit $ 0.0531
Stock options, outstanding | shares 133,085,000
Stock options, weighted average remaining life 3 months 10 days
Stock options, weighted average exercise price $ 0.0455
Stock options, excercisable | shares 50,868,750
Stock options, weighted average exercise price, exercisable $ 0.0450
Stock options, weighted average remaining life, exercisable 1 month 13 days