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Accounting Policies - Accounting Policies (Detail Narrative) | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Foreign currency transaction losses during period | $ 75,041 | $ 202,587
Allowance for doubtful accounts | $ 152,357 | 104,760
Weighted average intangible assets amortization period | 8 years |
Research and development costs during period | $ 750,000 | 690,000
Shipping costs during period | 5,388,481 | 4,597,663
Advertising costs during period | $ 1,934,250 | $ 1,717,456
Major Customer No. 1 |  |
Net sales to major customers | 14.00% | 12.00%
Major Customer No. 2 |  |
Net sales to major customers | 11.00% | 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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