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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
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- Definition Element describing the percentage of fair value at which employees may purchase shares of the Company's common stock. + References No definition available. + Details
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- 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. + Details
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- 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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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Discount rate from fair value on purchase date that participants pay for shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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