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Note 7 - Employee Benefit and Savings Plan | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Pension and Other Postretirement Benefits Disclosure [Text Block] | 7 . EMPLOYEE BENEFIT AND SAVINGS PLANS We have a 401 (k) plan to provide retirement benefits for our employees. As allowed under Section 401 (k) of the Internal Revenue Code, the plan provides tax-deferred salary contributions for eligible employees and allows employees to contribute a percentage of their annual compensation to the plan on a pretax basis. Employee contributions are limited to a maximum annual amount as set periodically by the Internal Revenue Code. In 20 17, 2016, and 2015, we matched 100% of the pretax employee contributions on the first 3% of eligible earnings and 50% of the pretax employee contributions on the next 2% of eligible earnings that are contributed by employees.
Year Ended December 31, |  | Maximum Matching Contribution per Participant * |  |  | Total Matching Contribution |
20 17 |  |  | $10,600 |  |  |  | $326,612 |
20 16 |  |  | $10,600 |  |  |  | $277,753 |
20 15 |  |  | $10,400 |  |  |  | $290,388 |
* Due to the annual limit on eligible earnings imposed by the Internal Revenue Code The plan allows employees who meet the age requirements and reach the plan contribution limits to make a catch-up contribution. The catch-up contributions are not eligible for matching contributions. In addition, the plan provides for discretionary matching contributions as determined by the Board of Directors. There were no discretionary mat ching contributions made in 2017, 2016, or 2015. We currently offer no postretirement or postemployment benefits to our employees.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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