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, 2017 USD ($)
Pension Plan [Member]
Net transition obligation	$ 100
Actuarial net loss	3,037
Net amount to be recognized	3,137
Other Postretirement Benefits Plan [Member]
Net transition obligation
Actuarial net loss	12
Net amount to be recognized	$ 12

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (s)
-URI http://asc.fasb.org/extlink&oid=82843861&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 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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