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Note G - Employee Benefits Plans - Fair Values by Asset Category of Defined Benefit Pension Plan (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
--- | --- | --- | ---
Fair value by asset category |  | $ 1,247 | $ 1,571 | $ 1,642
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category |  | 1,247 |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Cash and Cash Equivalents [Member] |  |  |  |
Fair value by asset category |  | 157 |  |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category |  | 157 |  |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Commodities and Other [Member] |  |  |  |
Fair value by asset category |  | 27 |  |
Commodities and Other [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category |  | 27 |  |
Commodities and Other [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Commodities and Other [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category |  |  |  |
Equity Securities [Member] |  |  |  |
Fair value by asset category | [1] | 517 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [1] | 517 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category | [1] |  |  |
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category | [1] |  |  |
Debt Securities [Member] |  |  |  |
Fair value by asset category | [2] | 546 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [2] | 546 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category | [2] |  |  |
Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category | [2] |  |  |
[1] | This category is comprised of publicly traded funds, of which 26% are large-cap funds, 46% are mid-cap and small-cap, 17% are developed market funds, 10% are emerging markets equity funds, and 1% are specialty funds.
[2] | This category is comprised of publicly traded funds, of which 28% are REITs, 25% are high-yield fixed income funds, 24% are U.S. fixed income funds, 12% are developed market fixed income funds, and 11% are international/emerging markets funds.

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + 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 (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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