XML 57 R29.htm IDEA: XBRL DOCUMENT v3.20.4
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Restricted Cash $ 300 $ 300
Lease liabilities 0 0
Finance lease liability 0 0
Deferred offering costs $ 0 $ 1,100