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Note 14 - Stock-based Compensation and Purchase Plans (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2017 | Jul. 01, 2005 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Share-based Compensation Continuing Operations |  |  | $ 4,350 | $ 4,962 | $ 5,023
Deferred Tax Expense from Stock Options Exercised |  |  | $ 1,100 | 1,200 | 1,900
Defined Contribution Plan Company Stock Held in Plan |  |  | 578,433 |  |
Stock Reserved for Employee Stock Purchase Plan |  |  | 73,617 |  |
Executive Compensation Plan [Member] |  |  |  |  |
Share-based Compensation Continuing Operations |  |  | $ 300 | 300 | 400
Share-based Compensation Arrangement by Share-based Payment Award Equity Instruments Other than Options Vested in Period Aggregate Intrinsic Value |  |  | 900 | $ 1,600 | $ 2,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  | $ 300 |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  | 1 year 73 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 |  |  | 34,950 | 31,760 |
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 |  |  | 7,698 | 5,622 | 3,742
Stock Issued During Period Average Price |  |  | $ 65.63 | $ 86.01 | $ 84.17
Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Continuing Operations |  |  | $ 3,700 | $ 3,700 | $ 3,600
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 70,085 | 51,792 | 51,563
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  | $ 102.74 | $ 93.73 | $ 85.07
Share-based Compensation Arrangement by Share-based Payment Award Equity Instruments Other than Options Vested in Period Aggregate Intrinsic Value |  |  | $ 800 |  | $ 1,100
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  | $ 5,800 |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  | 1 year 189 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  |  | 128,042 | 120,010 |
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 |  |  | $ 110.22 | $ 96.56 | $ 87.05
Performance Stock Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 28,803 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance |  |  | 69,052 | 58,028 |
Performance Stock Units [Member] | Executive Compensation Plan [Member] |  |  |  |  |
Share-based Compensation Continuing Operations |  |  | $ 300 | $ 900 | $ 1,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  | $ 106.65 | $ 91.75 | $ 83.92
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  | $ 1,400 |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  | 1 year 7 days |  |

X
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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=116856206&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=116856206&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=116856206&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=116856206&loc=d3e5070-113901 + Details
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