Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies and Estimates (Details)

v3.22.1
Significant Accounting Policies and Estimates (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
segment
shares
Dec. 31, 2020
USD ($)
May 26, 2020
shares
May 25, 2020
shares
May 03, 2020
shares
Aug. 28, 2019
shares
Allowance for doubtful accounts $ 4 $ 1        
Raw materials 178 190        
Work-in-progress 88 22        
Finished goods 25 21        
prepaid insurance 23 16        
General prepaid expenses 54 9        
Remaining performance obligations 0 0        
Warrants issued for equity raising costs   65        
Proceeds from issuance of convertible promissory notes $ 2,957 $ 100        
Number of operating segments | segment 1          
2019 Plan            
Common stock reserved for issuance | shares 571,429   57,143 2,000,000 485,714 57,143
Number of shares available for grant | shares 434,939         17,000,000
2019 Plan | Executive officer            
Number of shares available for grant | shares     14,285     500,000