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Note G - Employee Benefit Plans - Fair Values by Asset Category of Defined Benefit Pension Plan (Details) - USD ($) | Jun. 30, 2015
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Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value by asset category |  | $ 37,000
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value by asset category |  | 0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value by asset category |  | 0
Cash and Cash Equivalents [Member] |  |
Fair value by asset category |  | 37,000
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value by asset category | [1] | 872,000
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value by asset category | [1] | 0
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value by asset category | [1] | 0
Equity Securities [Member] |  |
Fair value by asset category | [1] | 872,000
Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value by asset category | [2] | 733,000
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value by asset category | [2] | 0
Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value by asset category | [2] | 0
Debt Securities [Member] |  |
Fair value by asset category | [2] | 733,000
Fair Value, Inputs, Level 1 [Member] |  |
Fair value by asset category |  | 1,642,000
Fair Value, Inputs, Level 2 [Member] |  |
Fair value by asset category |  | 0
Fair Value, Inputs, Level 3 [Member] |  |
Fair value by asset category |  | 0
Fair value by asset category |  | $ 1,642,000
[1] | This category is comprised of publicly traded funds, of which 76% are large-cap funds, 13% are emerging markets equity funds, and 11% are international equity funds.
[2] | This category is comprised of publicly traded funds, of which 32% are short-term fixed income funds, 14% are high-yield fixed income funds, 38% are intermediate fixed income funds, 12% are REITs and MLPs funds, and 4% are international/emerging markets funds.

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: 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=58740216&loc=d3e1928-114920 + Details
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