Note 8 - Director and Employee Stock Compensation Plans (Details) - Exercise Price for Options Outstanding (USD $)	12 Months Ended
Jun. 30, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower exercise price	$ 0.50
Upper exercise price	$ 1.71
Options outstanding (in Shares)	3,311,745
Options exercisable (in Shares)	1,960,591
Exercise Price Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower exercise price	$ 0.50
Upper exercise price	$ 0.75
Options outstanding (in Shares)	1,454,385
Weighted average exercise prices of options outstanding	$ 0.69
Weighted average remaining contractual life of options outstanding	6 years 146 days
Options exercisable (in Shares)	1,115,485
Weighted average exercise prices of options exercisable	$ 0.68
Weighted average remaining contractual life of options exercisable	6 years 109 days
Exercise Price Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower exercise price	$ 0.76
Upper exercise price	$ 1.00
Options outstanding (in Shares)	1,584,610
Weighted average exercise prices of options outstanding	$ 0.89
Weighted average remaining contractual life of options outstanding	8 years 73 days
Options exercisable (in Shares)	647,356
Weighted average exercise prices of options exercisable	$ 0.86
Weighted average remaining contractual life of options exercisable	7 years 6 months
Exercise Price Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Lower exercise price	$ 1.01
Upper exercise price	$ 1.71
Options outstanding (in Shares)	272,750
Weighted average exercise prices of options outstanding	$ 1.22
Weighted average remaining contractual life of options outstanding	3 years 292 days
Options exercisable (in Shares)	197,750
Weighted average exercise prices of options exercisable	$ 1.24
Weighted average remaining contractual life of options exercisable	1 year 219 days

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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