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Note A - Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2015	Sep. 27, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.05%			6.05%
Long-term Debt, Fair Value	$ 3,726,000			$ 3,726,000
Debt Instrument, Interest Rate During Period				1.01%
Debt Instrument, Basis Spread on Variable Rate				1.00%
Fair Value Inputs, Discount Rate				2.01%
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life			10 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life			40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life			5 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life			15 years
Overstatement of Payroll Accrual [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount						$ 337,000
Overstatement of Warranty Accrual [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount						217,000
Overstatement of Work in Progress Inventory [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount						(117,000)
Understatement of Deferred Tax Liabilities [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount						$ 285,000
Understatement Of Tax Expenses [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount					$ 175,000
Understatement Of Accrued Retirement Benefits [Member]
Quantifying Misstatement in Current Year Financial Statements, Amount	470,000
Impairment of Long-Lived Assets Held-for-use			$ 0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			0
Foreign Currency Transaction Gain (Loss), before Tax			(320,000)	$ 491,000	293,000
Allowance for Doubtful Accounts Receivable	2,183,000		$ 1,824,000	2,183,000
Debt Instrument, Interest Rate, Stated Percentage			6.05%
Goodwill, Impairment Loss			$ 7,602,000
Quantifying Misstatement in Current Year Financial Statements, Amount		$ 437,000
Quantifying Misstatement in Current Year Financial Statements Amount, Net of Tax Attributable to Parent		$ 69,000
Quantifying Misstatement In Current Year Financial Statement Increase Decrease Amount Net Earnings				$ (175,000)
Quantifying Misstatement In Current Year Financial Statement Increase (Decrease) Amount Comprehensive Income (Loss)	$ (470,000)

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- Definition

The increase (decrease) amount in impact of each individual error being corrected in the correcting adjustment on comprehensive income (loss).

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The increase (decrease) amount in impact of each individual error being corrected in the correcting adjustment on net earnings.

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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of each individual error being corrected in the correcting adjustment.

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