Summary of Significant Accounting Policies - Risk Concentrations - Cash (Details) $ in Millions	Mar. 31, 2020 USD ($)
Risk Concentrations
Aggregate balances that exceed insurance coverage	$ 14.7

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

No definition available.

Name:	us-gaap_CashUninsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant