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Accounting Policies - Accounting Policies (Detail Narrative) | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Foreign currency transaction losses during period | $ 202,587 | $ 117,347
Allowance for doubtful accounts | $ 104,760 | 128,318
Weighted average intangible assets amortization period | 8 years |
Research and development costs during period | $ 690,000 | 665,000
Shipping costs during period | 4,597,663 | 4,399,364
Advertising costs during period | $ 1,717,456 | $ 1,660,687
Major Customer No. 1 |  |
Net sales to major customers | 12.00% | 14.00%
Major Customer No. 2 |  |
Net sales to major customers | 12.00% | 12.00%
Exceeded 10% of Consolidated Net Sales |  |
Number of major customers | 2 | 2
Minimum Range |  |
Asset useful life | 3 years |
Maximum Range |  |
Asset useful life | 30 years |

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