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14. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
|  | 1st Quarter |  | 2nd Quarter |  | 3rd Quarter |  | 4th Quarter |  | Total Year
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 65,783,284 |  |  | $ | 68,822,520 |  |  | $ | 72,729,678 |  |  | $ | 78,906,687 |  |  | $ | 286,242,169 |
Gross margin |  |  | 21,853,149 |  |  |  | 22,585,662 |  |  |  | 24,273,792 |  |  |  | 27,648,122 |  |  |  | 96,360,725 |
Net income |  |  | 723,788 |  |  |  | 1,511,461 |  |  |  | 3,138,507 |  |  |  | 4,471,542 |  |  |  | 9,845,298 |
Dividends paid |  |  | 753,981 |  |  |  | 754,321 |  |  |  | 754,665 |  |  |  | 755,012 |  |  |  | 3,017,979 |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.10 |  |  | $ | 0.20 |  |  | $ | 0.42 |  |  | $ | 0.59 |  |  | $ | 1.30 |
Diluted |  | $ | 0.10 |  |  | $ | 0.20 |  |  | $ | 0.42 |  |  | $ | 0.59 |  |  | $ | 1.30 |
|  | 1st Quarter |  | 2nd Quarter |  | 3rd Quarter |  | 4th Quarter |  | Total Year
2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 53,715,476 |  |  | $ | 59,419,751 |  |  | $ | 70,176,216 |  |  | $ | 61,559,288 |  |  | $ | 244,870,731 |
Gross margin |  |  | 18,670,770 |  |  |  | 20,310,487 |  |  |  | 22,739,670 |  |  |  | 21,821,524 |  |  |  | 83,542,451 |
Net income |  |  | 892,096 |  |  |  | 1,772,280 |  |  |  | 2,934,196 |  |  |  | 1,774,184 |  |  |  | 7,372,756 |
Dividends paid |  |  | - |  |  |  | 750,357 |  |  |  | 752,933 |  |  |  | 751,645 |  |  |  | 2,254,935 |
Net income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.12 |  |  | $ | 0.24 |  |  | $ | 0.39 |  |  | $ | 0.24 |  |  | $ | 0.98 |
Diluted |  | $ | 0.12 |  |  | $ | 0.24 |  |  | $ | 0.39 |  |  | $ | 0.24 |  |  | $ | 0.98 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306 + Details
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