Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Loss, Beginning Balance	$ (643,000)	$ (502,000)
Other comprehensive loss before reclassifications	(232,000)	(176,000)
Amounts Reclassified from OCI	19,000	(49,000)
Tax Effect of OCI Activity	81,000	84,000
Other comprehensive loss	(132,000)	(141,000)
Accumulated Other Comprehensive Loss, Ending Balance	(775,000)	(643,000)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Loss, Beginning Balance	(123,000)	33,000
Other comprehensive loss before reclassifications	414,000	2,228,000
Amounts Reclassified from OCI	(74,000)	(2,461,000)
Tax Effect of OCI Activity	(122,000)	77,000
Other comprehensive loss	218,000	(156,000)
Accumulated Other Comprehensive Loss, Ending Balance	95,000	(123,000)
Accumulated Other Comprehensive Loss, Beginning Balance	(766,000)	(469,000)
Other comprehensive loss before reclassifications	182,000	2,052,000
Amounts Reclassified from OCI	(55,000)	(2,510,000)
Tax Effect of OCI Activity	(41,000)	161,000
Other comprehensive loss	86,000	(297,000)
Accumulated Other Comprehensive Loss, Ending Balance	$ (680,000)	$ (766,000)