Note D - Other Comprehensive (Loss) Income - Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 77,405	$ 71,876	$ 76,084	$ 68,248
Balance	76,120	75,130	76,120	75,130
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(565)	(387)	(491)	(387)
ASU 2018-02 Adjustment			(74)
OCI/OCL before reclassifications
Amounts reclassified from OCI
Tax effect of OCI activity
Net current period OCI/OCL			(74)
Balance	(565)	(387)	(565)	(387)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	1,116	192	783	(191)
ASU 2018-02 Adjustment			(54)
OCI/OCL before reclassifications	(369)	1,784	932	2,729
Amounts reclassified from OCI	(808)	(674)	(1,612)	(1,120)
Tax effect of OCI activity	274	(258)	164	(374)
Net current period OCI/OCL	(903)	852	(570)	1,235
Balance	213	1,044	213	1,044
AOCI Attributable to Parent [Member]
Balance	551	(195)	292	(578)
ASU 2018-02 Adjustment			(128)
OCI/OCL before reclassifications	(369)	1,784	932	2,729
Amounts reclassified from OCI	(808)	(674)	(1,612)	(1,120)
Tax effect of OCI activity	274	(258)	164	(374)
Net current period OCI/OCL	(903)	852	(644)	1,235
Balance	$ (352)	$ 657	$ (352)	$ 657

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

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