Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Balance	$ 76,084	$ 68,248
Balance	77,405	71,876
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(491)	(387)
Reclassification pursuant to adoption of ASU 2018-02 (Note A)	(74)
OCI/OCL before reclassifications
Amounts reclassified from OCI
Tax effect of OCI activity
Net current period OCI/OCL	(74)
Balance	(565)	(387)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	783	(191)
Reclassification pursuant to adoption of ASU 2018-02 (Note A)	(54)
OCI/OCL before reclassifications	1,301	945
Amounts reclassified from OCI	(804)	(446)
Tax effect of OCI activity	(110)	(116)
Net current period OCI/OCL	333	383
Balance	1,116	192
AOCI Attributable to Parent [Member]
Balance	292	(578)
Reclassification pursuant to adoption of ASU 2018-02 (Note A)	(128)
OCI/OCL before reclassifications	1,301	945
Amounts reclassified from OCI	(804)	(446)
Tax effect of OCI activity	(110)	(116)
Net current period OCI/OCL	259	383
Balance	$ 551	$ (195)

Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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