Investment Securities (Schedule of Available-for-Sale Securities) (Details) - USD ($)	Dec. 31, 2021	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 3,057,000	$ 3,092,000
Certificates of Deposit [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,057,000	3,092,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	$ 3,057,000	$ 3,092,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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