Note D - Accumulated Other Comprehensive (Loss) Income (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Revenue, Net	$ 25,135,000	$ 30,006,000	$ 89,761,000	$ 78,502,000
Other Nonoperating Income (Expense)	(6,000)	1,611,000	(21,000)	1,601,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Revenue, Net	278,000	118,000	549,000	125,000
Other Nonoperating Income (Expense)	$ 106,000	$ 2,000	$ 336,000	$ 53,000