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Regulatory Requirements - Narrative (Details) - USD ($)
1 Months Ended
Oct. 31, 2020
Sep. 30, 2020
Public Utilities, General Disclosures [Line Items]    
Net worth requirement   $ 224,500,000
Net worth   $ 376,500,000
CA DBO | Subsequent Event    
Public Utilities, General Disclosures [Line Items]    
Litigation settlement expense $ 62,000