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Accounting Policies - Accounting Policies (Detail Narrative) | 12 Months Ended
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Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Foreign currency transaction gains (losses) during period | $ (7,458) | $ 24,404
Allowance for doubtful accounts | $ 462,132 | 166,907
Weighted average intangible assets amortization period | 10 years |
Research and development costs during period | $ 734,000 | 752,000
Shipping costs during period | 7,553,410 | 6,595,544
Advertising costs during period | 1,935,267 | $ 1,997,113
Operating lease right-of-use assets and associated liabilities upon adoption | $ 2,900,000 |
Major Customer No. 1 |  |
Net sales to major customers | 13.00% | 16.00%
Major Customer No. 2 |  |
Net sales to major customers |  | 11.00%
Exceeded 10% of Consolidated Net Sales |  |
Number of major customers | 1 | 2
Minimum Range |  |
Asset useful life | 3 years |
Maximum Range |  |
Asset useful life | 30 years |

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