Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013
Accumulated other comprehensive income (loss)	$ 271,000	$ (633,000)	$ 271,000	$ (633,000)	$ 251,000	$ (469,000)	$ (638,000)	$ (430,000)
Other comprehensive income before reclassifications	461,000	(149,000)	1,723,000	(568,000)
Amounts reclassified from OCI	(430,000)	157,000	(585,000)	231,000
Tax effect of OCI activity	(11,000)	(3,000)	(398,000)	134,000
Other comprehensive income	20,000	5,000	740,000	(203,000)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated other comprehensive income (loss)	(502,000)	(482,000)	(502,000)	(482,000)	(502,000)	(502,000)	(482,000)	(482,000)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss)	773,000	(151,000)	773,000	(151,000)	753,000	33,000	(156,000)	52,000
Other comprehensive income before reclassifications	461,000	(149,000)	1,723,000	(568,000)
Amounts reclassified from OCI	(430,000)	157,000	(585,000)	231,000
Tax effect of OCI activity	(11,000)	(3,000)	(398,000)	134,000
Other comprehensive income	$ 20,000	$ 5,000	$ 740,000	$ (203,000)