Investments (Details) - USD ($)	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Short-term investments	$ 0	$ 400,000	$ 0
Total gains recognized from trading securities	7,000	286,000
Less: Realized gains from sales of trading securities	7,000	1,909,000
Unrealized (losses) gains from trading securities	$ 0	$ (1,623,000)

No definition available.

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- Definition

The sum of the realized and unrealized net gain (loss) on trading securities during the period.

+ References

No definition available.

+ Details

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

Amount of gain (loss) realized from securities classified as trading.

+ References

No definition available.

+ Details

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- Definition

Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

No definition available.

+ Details

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