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Note G - Employee Benefit Plans (Details) - Defined Benefit Pension Plan's Weighted Average Asset Allocation and Weighted Average Target Allocation | 12 Months Ended |
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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% |

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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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