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Summary of Significant Accounting Policies - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
Accounting Policies [Abstract]    
Reportable segment | segment 1  
Money market deposits, exceeding federally insured limits | $ $ 3.2 $ 0.2