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Business Risk and Credit Risk Concentration Involving Cash - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 Customer	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 Customer
Risks And Uncertainties [Abstract]
Revenue from number of customers | Customer	1	1	1	1
Federal Deposit Insurance Corporation amount per depositor | $	$ 250		$ 250

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- Definition

Revenue from contract with customers, number of customers.

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No definition available.

+ Details

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- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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