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Note 6 - Employee Benefit and Savings Plan (Tables) | 12 Months Ended
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Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract] |
Defined Contribution Plan Disclosures [Table Text Block] |
Year Ended December 31, |  | Maximum Matching Contribution per Participant* |  |  | Total Matching Contribution |
2014 |  | $ | 10,400 |  |  | $ | 286,224 |
2013 |  | $ | 10,200 |  |  | $ | 301,434 |
2012 |  | $ | 7,500 |  |  | $ | 308,567 |

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- Definition Tabular disclosure of defined contribution pension plans or defined contribution other postretirement plans, separately for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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