Note M - Pension and Other Postretirement Benefit Plans - Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized Over Next Fiscal Year (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Pension Plan [Member]
Net transition obligation	$ 37
Prior service cost	44
Actuarial net loss	2,254
Net amount to be recognized	2,335
Other Postretirement Benefits Plan [Member]
Net transition obligation	0
Prior service cost	(275)
Actuarial net loss	0
Net amount to be recognized	$ (275)

Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (s)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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- Definition

Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

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- Definition

Amount included in accumulated other comprehensive income (loss) for transition asset (obligation) expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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