XML 52 R35.htm IDEA: XBRL DOCUMENT v3.21.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Loss Contingencies [Line Items]    
Liabilities recorded for agreements $ 0 $ 0
Agreement with Financial Institution    
Loss Contingencies [Line Items]    
Letters of credit outstanding amount $ 400,000  
Letter of credit notice period by financial institution before annual expiration date 30 days