Recent Accounting Pronouncements and Supplemental Information - Components of Non-operating income (expense), net (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Recent Accounting Pronouncements and Supplemental Information [Abstract]
Gain (Loss) on SERP Investments	$ (93)	$ 758
Other	(93)	(15)
Non-operating income (expense), net	$ (186)	$ 743

Sum of interest income, interest expense, non-operating income and non-operating expense.

No definition available.

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- Definition

Recent Accounting Pronouncements and Supplemental Information [Abstract]

+ References

No definition available.

+ Details

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- Definition

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117546-209714

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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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