Note 1 - Accounting Policies - Assets and Liabilities at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Cash [Member] \| Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	$ 663	$ 617
Unrealized Gain
Unrealized Loss
Fair Value	$ 633	$ 617
Cash & Cash Equivalents	$ 633	$ 617
Short-term Marketable Securities
Long-term Marketable Securities
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	$ 4,033	$ 4,845
Unrealized Gain
Unrealized Loss
Fair Value	$ 4,033	$ 4,845
Cash & Cash Equivalents	$ 4,033	$ 4,845
Short-term Marketable Securities
Long-term Marketable Securities
Fair Value, Inputs, Level 1 [Member]
Adjusted Cost		$ 5,462
Unrealized Gain
Unrealized Loss
Fair Value		$ 5,462
Cash & Cash Equivalents		$ 5,462
Short-term Marketable Securities
Long-term Marketable Securities
Fair Value, Inputs, Level 2 [Member] \| US Government Agencies Debt Securities [Member]
Adjusted Cost		$ 332
Unrealized Gain
Unrealized Loss
Fair Value		$ 332
Cash & Cash Equivalents
Short-term Marketable Securities		$ 332
Long-term Marketable Securities
Fair Value, Inputs, Level 2 [Member] \| Corporate Debt Securities [Member]
Adjusted Cost		$ 1,354
Unrealized Gain		$ 1
Unrealized Loss
Fair Value		$ 1,355
Cash & Cash Equivalents
Short-term Marketable Securities		$ 1,355
Long-term Marketable Securities
Fair Value, Inputs, Level 2 [Member] \| US States and Political Subdivisions Debt Securities [Member]
Adjusted Cost		$ 76
Unrealized Gain
Unrealized Loss
Fair Value		$ 76
Cash & Cash Equivalents
Short-term Marketable Securities		$ 76
Long-term Marketable Securities
Fair Value, Inputs, Level 2 [Member]
Adjusted Cost		$ 1,762
Unrealized Gain		$ 1
Unrealized Loss
Fair Value		$ 1,763
Cash & Cash Equivalents
Short-term Marketable Securities		$ 1,763
Long-term Marketable Securities
Adjusted Cost	$ 4,696	$ 7,224
Unrealized Gain		$ 1
Unrealized Loss
Fair Value	$ 4,696	$ 7,225
Cash & Cash Equivalents	$ 4,696	5,462
Short-term Marketable Securities		$ 1,763
Long-term Marketable Securities

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.

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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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

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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 Trading Securities

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

Reference 2: 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

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=51813488&loc=d3e22054-111558

Reference 4: 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 5: 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

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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 45

-Paragraph 1

-Subparagraph (f)

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

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=49167202&loc=d3e26626-111562

Reference 3: 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)

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Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term.

+ References

Reference 1: 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=49167202&loc=d3e26626-111562

Reference 2: 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

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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

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The increase (decrease), resulting in a loss, 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.

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