Note 3 - Employee Stock Compensation Plans (Detail) - Exercise prices for options outstanding and related information: (USD $)	6 Months Ended
Dec. 31, 2012	Jun. 30, 2012
Range of Exercise Prices, lower limit	$ 0.17
Range of Exercise Prices, upper limit	$ 3.81
Options Outstanding (in Shares)	3,481,900	3,481,900
Weighted Average Exercise Prices of Options Outstanding	$ 0.76	$ 0.76
Weighted Average Remaining Contractual Life of Options Outstanding	7 years 6 months
Options Exercisable (in Shares)	1,206,100
Weighted Average Exercise Prices of Options Exercisable	$ 0.81
Weighted Average Remaining Contractual Life of Options Exercisable	5 years 73 days
$0.17 - 0.50 [Member]
Range of Exercise Prices, lower limit	$ 0.17
Range of Exercise Prices, upper limit	$ 0.50
Options Outstanding (in Shares)	170,120
Weighted Average Exercise Prices of Options Outstanding	$ 0.42
Weighted Average Remaining Contractual Life of Options Outstanding	1 year 255 days
Options Exercisable (in Shares)	170,120
Weighted Average Exercise Prices of Options Exercisable	$ 0.42
Weighted Average Remaining Contractual Life of Options Exercisable	1 year 255 days
$0.51 - 0.75 [Member]
Range of Exercise Prices, lower limit	$ 0.51
Range of Exercise Prices, upper limit	$ 0.75
Options Outstanding (in Shares)	1,883,920
Weighted Average Exercise Prices of Options Outstanding	$ 0.70
Weighted Average Remaining Contractual Life of Options Outstanding	8 years 73 days
Options Exercisable (in Shares)	529,480
Weighted Average Exercise Prices of Options Exercisable	$ 0.69
Weighted Average Remaining Contractual Life of Options Exercisable	7 years 292 days
$0.76 - 1.00 [Member]
Range of Exercise Prices, lower limit	$ 0.76
Range of Exercise Prices, upper limit	$ 1.00
Options Outstanding (in Shares)	1,189,360
Weighted Average Exercise Prices of Options Outstanding	$ 0.81
Weighted Average Remaining Contractual Life of Options Outstanding	8 years 73 days
Options Exercisable (in Shares)	268,000
Weighted Average Exercise Prices of Options Exercisable	$ 0.86
Weighted Average Remaining Contractual Life of Options Exercisable	4 years 73 days
$1.01 - 3.81 [Member]
Range of Exercise Prices, lower limit	$ 1.01
Range of Exercise Prices, upper limit	$ 3.81
Options Outstanding (in Shares)	238,500
Weighted Average Exercise Prices of Options Outstanding	$ 1.29
Weighted Average Remaining Contractual Life of Options Outstanding	3 years 36 days
Options Exercisable (in Shares)	238,500
Weighted Average Exercise Prices of Options Exercisable	$ 1.29
Weighted Average Remaining Contractual Life of Options Exercisable	3 years 36 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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

+ References

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

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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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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.

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