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Summary of Significant Accounting Policies - (Marketable Securities) (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Marketable Securities [Line Items]
Marketable securities	$ 8,968	$ 8,680
Bond Mutual Fund [Member]
Marketable Securities [Line Items]
Marketable securities	2,397	2,229
Stock Mutual Funds [Member]
Marketable Securities [Line Items]
Marketable securities	$ 6,571	$ 6,451

X

- Definition

Amount of investment in marketable security.

+ 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=120398452&loc=d3e534808-122878

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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X

- Details

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Namespace Prefix:
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