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Note 2 - Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
BASIC |  | 2017 |  |  | 2016 |  |  | 2015 |
Net income |  | $ | 4,451,751 |  |  | $ | 6,402,259 |  |  | $ | 6,402,405 |
Weighted average common shares outstanding |  |  | 9,242,092 |  |  |  | 9,301,867 |  |  |  | 10,077,506 |
Earnings per share – basic |  | $ | 0.48 |  |  | $ | 0.69 |  |  | $ | 0.64 |
DILUTED |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 4,451,751 |  |  | $ | 6,402,259 |  |  | $ | 6,402,405 |
Weighted average common shares outstanding |  |  | 9,242,092 |  |  |  | 9,301,867 |  |  |  | 10,077,506 |
Effect of restricted stock awards and assumed exercise of stock options |  |  | 14,718 |  |  |  | 19,691 |  |  |  | 25,254 |
Weighted average common shares outstanding, assuming dilution |  |  | 9,256,810 |  |  |  | 9,321,558 |  |  |  | 10,102,760 |
Earnings per share - diluted |  | $ | 0.48 |  |  | $ | 0.69 |  |  | $ | 0.63 |
Outstanding options and restricted stock awards excluded as anti-dilutive |  |  | 17,632 |  |  |  | 31,477 |  |  |  | 60,433 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | As of December 31, 201 7 |
|  | Gross |  |  | Accumulated Amortization |  |  | Net |
Trademarks, Copyrights |  | $ | 554,369 |  |  | $ | 545,897 |  |  | $ | 8,472 |
Non-Compete Agreements |  |  | 175,316 |  |  |  | 164,566 |  |  |  | 10,750 |
|  | $ | 729,685 |  |  | $ | 710,463 |  |  | $ | 19,222 |
|  | As of December 31, 201 6 |
|  | Gross |  |  | Accumulated Amortization |  |  | Net |
Trademarks, Copyrights |  | $ | 554,369 |  |  | $ | 545,279 |  |  | $ | 9,090 |
Non-Compete Agreements |  |  | 175,316 |  |  |  | 163,566 |  |  |  | 11,750 |
|  | $ | 729,685 |  |  | $ | 708,845 |  |  | $ | 20,840 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
201 8 |  | $ | 1,417 |
201 9 |  |  | 666 |
20 20 |  |  | 666 |
202 1 |  |  | 666 |
2022 |  |  | 666 |
Thereafter |  |  | 5,141 |

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