Note 6 - Cash, Cash Equivalents and Marketable Securities (Detail) - Summary of Available-For-Sale Securities (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Jun. 30, 2012
Adjusted Cost	$ 16,721	$ 20,876
Unrealized Gains	30	13
Unrealized Losses	(6)	(4)
Fair Value	16,745	20,885
Cash & Cash Equivalents	825	7,381
Short-term Marketable Securities	7,684	7,135
Long-term Marketable Securities	8,236	6,369
Cash [Member] \| Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	376	635
Fair Value	376	635
Cash & Cash Equivalents	376	635
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	449	6,746
Fair Value	449	6,746
Cash & Cash Equivalents	449	6,746
US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	2,008	2,524
Unrealized Gains	1
Unrealized Losses		(1)
Fair Value	2,009	2,523
Short-term Marketable Securities	2,009	1,508
Long-term Marketable Securities		1,015
US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	549	753
Unrealized Gains		1
Unrealized Losses	(1)
Fair Value	548	754
Short-term Marketable Securities		754
Long-term Marketable Securities	548
Corporate Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	5,914	2,593
Unrealized Gains	4	5
Unrealized Losses	(5)	(1)
Fair Value	5,913	2,597
Short-term Marketable Securities	2,488	1,696
Long-term Marketable Securities	3,425	901
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	6,275	3,471
Unrealized Gains	23	6
Fair Value	6,298	3,477
Short-term Marketable Securities	2,585	1,752
Long-term Marketable Securities	3,713	1,725
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	553	1,629
Unrealized Gains	1	1
Fair Value	554	1,630
Short-term Marketable Securities	467	1,256
Long-term Marketable Securities	87	374
Collateralized Mortgage Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	597	2,525
Unrealized Gains	1
Unrealized Losses		(2)
Fair Value	598	2,523
Short-term Marketable Securities	135	169
Long-term Marketable Securities	463	2,354
Fair Value, Inputs, Level 1 [Member]
Adjusted Cost	2,833	9,905
Unrealized Gains	1
Unrealized Losses		(1)
Fair Value	2,834	9,904
Cash & Cash Equivalents	825	7,381
Short-term Marketable Securities	2,009	1,508
Long-term Marketable Securities		1,015
Fair Value, Inputs, Level 2 [Member]
Adjusted Cost	13,888	10,971
Unrealized Gains	29	13
Unrealized Losses	(6)	(3)
Fair Value	13,911	10,981
Short-term Marketable Securities	5,675	5,627
Long-term Marketable Securities	$ 8,236	$ 5,354

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

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

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

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-Chapter 3

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

-Publisher FASB

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 22

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-Publisher FASB

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-Topic 320

-SubTopic 10

-Section 45

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+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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- Definition

Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

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

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+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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