Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation [Line Items]
Weighted-average asset allocation	100.00%	100.00%
Weighted-average target allocation	100.00%
Equity Securities [Member]
Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation [Line Items]
Weighted-average asset allocation	49.00%	48.00%
Weighted-average target allocation	48.00%
Debt Securities [Member]
Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation [Line Items]
Weighted-average asset allocation	45.00%	46.00%
Weighted-average target allocation	47.00%
Commodity Contract [Member]
Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation [Line Items]
Weighted-average target allocation	2.00%
Cash and Cash Equivalents [Member]
Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation [Line Items]
Weighted-average asset allocation	6.00%	6.00%
Weighted-average target allocation	3.00%