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Note 10 - 401(k) Retirement Benefit Plan | 12 Months Ended
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Dec. 31, 2016
Notes to Financial Statements |
Pension and Other Postretirement Benefits Disclosure [Text Block] | Note 10 - 401(k) Retirement Benefit Plan We maintain a defined contribution 401(k) plan covering substantially all employees. Employees can contribute a portion of their salary or wages as prescribed under Section 401(k) of the Internal Revenue Code and, subject to certain limitations, we may, at the discretion of our Board of Directors, authorize an employer contribution based on a portion of the employees' contributions. Since January 2010, we have matched 50% on the first 4% contributed by an employee, or a maximum of 2% of the employee’s income. For 2016 and 2015, we contributed $191 and $201, respectively, to the 401(k) plan.

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