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Significant Accounting Policies (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jan. 01, 2019 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  |  |  |  |  | 1 |  |  |
Net revenues from customers outside the United States | $ 9,305,553 | $ 6,935,439 | $ 9,417,443 | $ 8,729,860 | $ 10,487,842 | $ 5,853,451 | $ 7,084,843 | $ 5,918,758 | $ 34,388,295 | $ 29,344,894 | $ 26,322,627 |
Operating lease right-of-use assets | 2,960,569 |  |  |  |  |  |  |  | 2,960,569 |  |  | $ 3,600,000
Present value of lease liabilities | 2,996,903 |  |  |  |  |  |  |  | 2,996,903 |  |  | $ 3,800,000
Distribution costs |  |  |  |  |  |  |  |  | 613,637 | 457,814 | 487,669 |
Advertising costs |  |  |  |  |  |  |  |  | 2,594,630 | 2,005,113 | 2,377,338 |
Product Sales Related Allowances - Chargebacks, Cash Discounts and Damaged Goods |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, allowances, current | $ 800,000 |  |  |  | $ 700,000 |  |  |  | 800,000 | 700,000 |  |
Non-US |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Net revenues from customers outside the United States |  |  |  |  |  |  |  |  | $ 1,500,000 | $ 2,100,000 | $ 1,600,000 |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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