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Schedule of exercise price (Details)
12 Months Ended
Dec. 31, 2021
$ / shares
shares
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit $ 2.15
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 1,352
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 3,395,919
Weighted Average Remaining Contractual Life (Years) 9 years 9 months
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 2.50
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 266,991
Issuances Outside Of Plans [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit $ 1.79
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 850,000
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 1.79
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 708,221
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 1.79
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Remaining Contractual Term 8 years 8 months 19 days
Issuances Outside Of Plans 1 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 2,150,000
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 2.54
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Remaining Contractual Term 9 years 3 months 29 days
Issuances Outside Of Plans 2 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 3,000,000
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 2.33
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 708,221
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 1.79
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Remaining Contractual Term 9 years 1 month 27 days
Total Options [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit $ 1.79
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 1,352
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 6,395,919
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 2.42
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 975,212
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 2.47
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Remaining Contractual Term 9 years 5 months 20 days
Minimum [Member] | Issuances Outside Of Plans 1 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit $ 2.46
Minimum [Member] | Issuances Outside Of Plans 2 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit 1.79
Maximum [Member] | Issuances Outside Of Plans 1 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit 2.55
Maximum [Member] | Issuances Outside Of Plans 2 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 2.55
Exercise Price Range 1 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 3,395,000
Weighted Average Remaining Contractual Life (Years) 9 years 9 months
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 2.35
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 266,152
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 2.51
Exercise Price Range 1 [Member] | Minimum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit 2.15
Exercise Price Range 1 [Member] | Maximum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 2.62
Exercise Price Range 2 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 894
Weighted Average Remaining Contractual Life (Years) 3 years 11 months 12 days
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 537.34
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 814
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 535.12
Exercise Price Range 2 [Member] | Minimum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit 480
Exercise Price Range 2 [Member] | Maximum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit $ 560
Exercise Price Range 3 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares 25
Weighted Average Remaining Contractual Life (Years) 3 years 11 months 12 days
Share-based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price $ 1,336.00
Share-based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares 25
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 1,336.00
Exercise Price Range 3 [Member] | Minimum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit 1,208
Exercise Price Range 3 [Member] | Maximum [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit 1,352
Exercise Price Range 4 [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price $ 4.26