Percentage of equity securities by type of publicly traded funds.

No definition available.

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The expense in the period incurred with respect to providing health care benefits to employees.

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- Definition

The period of employment before retirement that is used to determine what amount of compensation to use as a a baseline for the companies defined benefit plan.

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No definition available.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

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Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

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Note G - Employee Benefit Plans (Details Textual) - USD ($)		12 Months Ended
	Jan. 01, 2004	Jun. 30, 2018	Jun. 30, 2017
Defined Contribution Plan, Employer Discretionary Contribution Amount		$ 256,000	$ 248,000
Health Insurance Plan Premium Expense		$ 1,100,000	$ 1,000,000
Number of Years Compensation Used for Benefit Obligation Assumptions		5 years
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		4.10%	3.90%
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 500,000
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		0
Defined Benefit Plan, Expected Amortization, Next Fiscal Year, Total		$ 5,000
Large-cap Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		47.00%
Mid-cap and Small-cap Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		27.00%
Developed Market Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		16.00%
Emerging Market Equity Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		9.00%
Specialty Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		1.00%
REIT [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		18.00%
High-yield Fixed Income Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		17.00%
Fixed Income Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		36.00%
Developed Market Fixed Income Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		8.00%
International Emerging Markets Funds [Member]
Defined Benefit Plan Equity Securities by Type, Percentage		21.00%
First Contributions [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
Next Contributions [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%