Note 1 - Summary of Accounting Policies (Details Textual) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Other Noncurrent Assets [Member]
Trading Securities, Cost	$ 2.3	$ 2.3
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Number of Major Customers	0
Sales Revenue, Net [Member]
Concentration Risk, Threshold Percentage	5.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Number of Major Customers	0
Accounts Receivable [Member]
Concentration Risk, Threshold Percentage	5.00%
20% Owned Equity Interest, Equity Method [Member]
Payments to Suppliers	$ 3.3	2.1	$ 1.6
Equity Method Investment, Ownership Percentage	20.00%
Selling, General and Administrative Expenses [Member]
Advertising Expense	$ 4.3	5.0	4.6
Research and Development Expense	$ 4.9	$ 4.1	$ 4.8
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0	0
Capitalized Computer Software, Amortization	$ 0.6	$ 0.5	$ 0.4
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Represents the threshold percentage used by the company for disclosing concentration risk.

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Represents the number of major customers accounting for 5% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

+ References

No definition available.

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Name Accounting Standards Codification
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- Definition

Amount of expense for amortization of capitalized computer software costs.

+ References

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-Publisher FASB
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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Payments of cash to suppliers for goods and services during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Cost of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

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