Note 9 - Defined Contribution Plan

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

NOTE 9—DEFINED CONTRIBUTION PLAN

In the U.S., the Company has an employee savings plan (“401(k) Plan”) that qualifies as a deferred salary arrangement under Section 401(k) of the Internal Revenue Code. Eligible employees may make voluntary contributions to the 401(k) Plan up to 100% of their annual compensation, subject to statutory annual limitations. In 2014, 2013 and 2012, the Company made discretionary contributions under the 401(k) Plan of $211,000, $184,000 and $146,000 respectively.

For the Company’s Japanese subsidiary, it has established an employee retirement plan at its discretion. In addition, for some of the Company’s other foreign subsidiaries, the Company deposits funds with insurance companies, third-party trustees, or into government-managed accounts consistent with the requirements of local laws. The Company has fully funded or accrued for its obligations as of December 31, 2014, and the related expense for each of the three years then ended was not significant.