Note D - Other Comprehensive Loss - Other Comprehensive (Loss) Income (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Accumulated other comprehensive income (loss)	$ 310,000	$ (586,000)	$ 310,000	$ (586,000)	$ 271,000	$ (469,000)	$ (633,000)	$ (430,000)
Other comprehensive income before reclassifications	939,000	35,000	2,662,000	(533,000)
Amounts reclassified from OCI	(879,000)	112,000	(1,464,000)	343,000
Tax effect of OCI activity	(21,000)	(100,000)	(419,000)	34,000
Other comprehensive income	39,000	47,000	779,000	(156,000)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated other comprehensive income (loss)	(502,000)	(518,000)	(502,000)	(518,000)	(502,000)	(502,000)	(482,000)	(482,000)
Tax effect of OCI activity		(36,000)		(36,000)
Other comprehensive income		(36,000)		(36,000)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated other comprehensive income (loss)	812,000	(68,000)	812,000	(68,000)	773,000	33,000	(151,000)	52,000
Other comprehensive income before reclassifications	939,000	35,000	2,662,000	(533,000)
Amounts reclassified from OCI	(879,000)	112,000	(1,464,000)	343,000
Tax effect of OCI activity	(21,000)	(64,000)	(419,000)	70,000
Other comprehensive income	$ 39,000	$ 83,000	$ 779,000	$ (120,000)