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Note 13 - Stock-based Compensation and Purchase Plans (Details Textual) - USD ($)			12 Months Ended
	Apr. 01, 2017	Jul. 01, 2005	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Continuing Operations			$ 4,962,000	$ 5,023,000	$ 5,089,000
Deferred Tax Expense from Stock Options Exercised			$ 1,200,000	1,900,000	1,800,000
Defined Contribution Plan Company Stock Held in Plan			157,921
Stock Reserved for Employee Stock Purchase Plan			81,315
Executive Compensation Plan [Member]
Share-based Compensation Continuing Operations			$ 300,000	400,000	$ 200,000
Share-based Compensation Arrangement by Share-based Payment Award Equity Instruments Other than Options Vested in Period Aggregate Intrinsic Value			1,600,000	$ 2,300,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total			$ 300,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 76 days
Percent of Participants Annual Incentive Compensation Participants May Elect to Defer Maximum			50.00%
Expiration of Restrictions on Units			3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			31,760	35,707
Executive Compensation Plan [Member] | Minimum [Member]
Shares of Common Stock Issued Determined by Adjustment of Target Range Percent			50.00%
Executive Compensation Plan [Member] | Maximum [Member]
Shares of Common Stock Issued Determined by Adjustment of Target Range Percent			200.00%
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	15.00%	5.00%
Percent of Fair Market Value at Which Employees May Purchase Shares of Stock	85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans			5,622	3,742	3,809
Stock Issued During Period Average Price			$ 86.01	$ 84.17	$ 75.66
Restricted Stock [Member]
Share-based Compensation Continuing Operations			$ 3,700,000	$ 3,600,000	$ 2,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			51,792	51,563	48,984
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 93.73	$ 85.07	$ 77.38
Share-based Compensation Arrangement by Share-based Payment Award Equity Instruments Other than Options Vested in Period Aggregate Intrinsic Value			$ 757,216	$ 800,000	$ 1,100,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total			$ 4,100,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 138 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			120,010	115,703
Restricted Stock [Member] | Executive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 96.56	$ 87.05	$ 82.79
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			24,567
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance			58,028	52,890
Performance Stock Units [Member] | Executive Compensation Plan [Member]
Share-based Compensation Continuing Operations			$ 900,000	$ 1,000,000	$ 2,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 91.75	$ 83.92	$ 76.61
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total			$ 2,000,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 109 days

X

- Definition

The amount of outstanding options held by the defined contribution plan.

+ References

No definition available.

+ Details

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X

- Definition

The amount of time after which the restriction on the units will expire.

+ References

No definition available.

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X

- Definition

Element describing the percentage of fair value at which employees may purchase shares of the Company's common stock.

+ References

No definition available.

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X

- Definition

The maximum percentage of employees' annual incentive compensation in restricted stock, which is purchased at a discount to the market, that they may elect to defer.

+ References

No definition available.

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X

- Definition

The intrinsic value of equity-based payment equity instruments, excluding stock (or unit) options, that vested during the reporting period as calculated by applying the disclosed pricing methodology.

+ References

No definition available.

+ Details

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X

- Definition

Additional information on share-based compensation from continuing operations.

+ References

No definition available.

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X

- Definition

The percentage by which the number of common stock issued will be adjusted upward or downward at the end of the performance period.

+ References

No definition available.

+ Details

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X

- Definition

Represents the average price of shares issued during the period.

+ References

No definition available.

+ Details

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X

- Definition

Represents the number of shares of stock that are reserved for the Company's Employee Stock Purchase Plan.

+ References

No definition available.

+ Details

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X

- Definition

Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise.

+ References

No definition available.

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X

- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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X

- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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X

- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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X

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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X

- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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