Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Additional Information (Details)

v3.21.2
Organization and Summary of Significant Accounting Policies - Additional Information (Details)
1 Months Ended 9 Months Ended
Nov. 30, 2020
Sep. 30, 2021
USD ($)
segment
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
Schedule of Organization and Summary of Significant Accounting Policies      
Number of Operating Segments | segment   1  
Reverse Split Ratio 1    
Common Stock, Par or Stated Value Per Share | $ / shares   $ 0.001 $ 0.001
Cash and cash equivalents   $ 7,418,000 $ 5,413,000
Warrant liabilities   0  
Fair Value, Recurring [Member] | Money Market Funds      
Schedule of Organization and Summary of Significant Accounting Policies      
Cash and cash equivalents   7,100,000 $ 5,100,000
October 2020 Offering      
Schedule of Organization and Summary of Significant Accounting Policies      
Cash and cash equivalents   $ 7,400,000