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Note 10 - Retirement Plan | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Pension and Other Postretirement Benefits Disclosure [Text Block] |
10 . | Retirement Plan
We participate in a multi-employer defined contribution retirement plan (the “401k Plan”) administered by a third -party service provider, and the Company contributes to the 401k Plan on behalf of its employees based upon a matching formula. During the years ended December 31, 2017, 2016 and 2015 our contributions to the 401k Plan were $29,265, $33,871, and $40,296, respectively.

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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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