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Note 3 - Concentration of Credit Risk, Other Concentration Risks and Significant Customers	3 Months Ended
Sep. 30, 2013
Risks and Uncertainties [Abstract]
Concentration Risk Disclosure [Text Block]	Note 3 – Concentration of Credit Risk, Other Concentration Risks and Significant Customers We are exposed to interest rate risks. Our investment income is sensitive to changes in the general level of U.S. interest rates, particularly since the majority of our investments are in shorter duration fixed income securities. We have no outstanding debt nor do we utilize auction rate securities or derivative financial instruments in our investment portfolio. Our financial results could be affected by changes in foreign currency exchange rates or weak economic conditions in foreign markets. As all sales are currently made in U.S. dollars, a strengthening of the dollar could make our products less competitive in foreign markets. Sales outside North America represented approximately 38.8% of net revenues in the three months ended September 30, 2013, and 36.5% of net revenues in the three months ended September 30, 2012. One customer accounted for 14.8% of the Company’s revenue for the three-month period ended September 30, 2013. The customer’s accounts receivable balance, net of specific allowances, totaled approximately 5.7% of net accounts receivable as of September 30, 2013. Two customers accounted for 13.6% and 10.3% of the Company’s revenue for the three-month period ended September 30, 2012. The customers’ accounts receivable balances, net of specific allowances, totaled approximately 16.1% and 12.1% of net accounts receivable as of September 30, 2012.

Note 3 - Concentration of Credit Risk, Other Concentration Risks and Significant Customers

3 Months Ended

Sep. 30, 2013

Concentration Risk Disclosure [Text Block]

Note 3 – Concentration of Credit Risk, Other Concentration Risks and Significant Customers

We are exposed to interest rate risks. Our investment income is sensitive to changes in the general level of U.S. interest rates, particularly since the majority of our investments are in shorter duration fixed income securities. We have no outstanding debt nor do we utilize auction rate securities or derivative financial instruments in our investment portfolio.

Our financial results could be affected by changes in foreign currency exchange rates or weak economic conditions in foreign markets. As all sales are currently made in U.S. dollars, a strengthening of the dollar could make our products less competitive in foreign markets. Sales outside North America represented approximately 38.8% of net revenues in the three months ended September 30, 2013, and 36.5% of net revenues in the three months ended September 30, 2012.

One customer accounted for 14.8% of the Company’s revenue for the three-month period ended September 30, 2013. The customer’s accounts receivable balance, net of specific allowances, totaled approximately 5.7% of net accounts receivable as of September 30, 2013. Two customers accounted for 13.6% and 10.3% of the Company’s revenue for the three-month period ended September 30, 2012. The customers’ accounts receivable balances, net of specific allowances, totaled approximately 16.1% and 12.1% of net accounts receivable as of September 30, 2012.

- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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