Note 6 - Summary of Available-for-Sale Securities (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jun. 30, 2014	Mar. 31, 2015
Level 1:
Adjusted Cost	$ 7,224us-gaap_CostMethodInvestments
Fair Value	7,225us-gaap_InvestmentsFairValueDisclosure
Cash & Cash Equivalents	5,462
Level 2:
Adjusted Cost	7,224us-gaap_CostMethodInvestments
Fair Value	7,225us-gaap_InvestmentsFairValueDisclosure
Short-term Marketable Securities	1,763us-gaap_MarketableSecuritiesCurrent
Unrealized Gains	1us-gaap_UnrealizedGainOnSecurities
Cash & Cash Equivalents	5,462
Cash [Member] \| Fair Value, Inputs, Level 1 [Member]
Level 1:
Adjusted Cost	617	820
Fair Value	617	820
Cash & Cash Equivalents	617	820
Level 2:
Adjusted Cost	617	820
Fair Value	617	820
Cash & Cash Equivalents	617	820
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Level 1:
Adjusted Cost	4,845	4,633
Fair Value	4,845	4,633
Cash & Cash Equivalents	4,845	4,633
Level 2:
Adjusted Cost	4,845	4,633
Fair Value	4,845	4,633
Cash & Cash Equivalents	4,845	4,633
US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Level 1:
Adjusted Cost	332
Fair Value	332
Level 2:
Adjusted Cost	332
Fair Value	332
Short-term Marketable Securities	332
Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Level 1:
Adjusted Cost	1,354
Fair Value	1,355
Level 2:
Adjusted Cost	1,354
Fair Value	1,355
Short-term Marketable Securities	1,355
Unrealized Gains	1
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Level 1:
Adjusted Cost	76
Fair Value	76
Level 2:
Adjusted Cost	76
Fair Value	76
Short-term Marketable Securities	76
Fair Value, Inputs, Level 1 [Member]
Level 1:
Adjusted Cost	5,462	5,453
Fair Value	5,462	5,453
Cash & Cash Equivalents	5,462	5,453
Level 2:
Adjusted Cost	5,462	5,453
Fair Value	5,462	5,453
Cash & Cash Equivalents	5,462	5,453
Fair Value, Inputs, Level 2 [Member]
Level 1:
Adjusted Cost	1,762
Fair Value	1,763
Level 2:
Adjusted Cost	1,762
Fair Value	1,763
Short-term Marketable Securities	1,763
Unrealized Gains	$ 1

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph a, f, g

-Article 7

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 35

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560

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- Definition

Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 2

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

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- Definition

The increase (decrease), resulting in a gain, in the difference between the fair value and the carrying value, or in the comparative fair values, of securities held at each balance sheet date, that was included in earnings for the period.

+ References

No definition available.

+ Details

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