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Note 10 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Product sales, net | $ 1,899,821 | $ 1,622,246 | $ 6,073,580 | $ 5,856,351 |
Operating Income (Loss) | (946,734) | (4,547,581) | (2,872,749) | (7,973,924) |
Depreciation and Amortization | 25,418 | 344,984 | 76,919 | 855,101 |
Income (loss) before taxes and equity in earnings of affiliates | (2,848,667) | (4,547,821) | (4,725,577) | (7,973,028) |
Dental | 6,242,520 |  | 6,242,520 |  | $ 6,400,968
Corporate, Non-Segment [Member] |  |  |  |  |
Operating Income (Loss) | (1,036,541) | (3,200,126) | (2,927,655) | (6,084,685) |
Depreciation and Amortization | 19,044 | 338,565 | 57,620 | 821,084 |
Income (loss) before taxes and equity in earnings of affiliates | (2,937,140) | (3,133,819) | (4,777,693) | (6,088,167) |
Dental | 983,631 |  | 983,631 |  | 902,816
Dental Segment [Member] | Operating Segments [Member] |  |  |  |  |
Product sales, net | 1,884,321 | 1,622,246 | 6,042,580 | 5,780,251 |
Operating Income (Loss) | 644,650 | (893,148) | 1,766,087 | 119,613 |
Depreciation and Amortization | 3,950 | 3,889 | 11,875 | 12,133 |
Income (loss) before taxes and equity in earnings of affiliates | 645,442 | (959,095) | 1,765,475 | 125,734 |
Dental | 4,745,889 |  | 4,745,889 |  | 5,169,944
Medical Segment [Member] | Operating Segments [Member] |  |  |  |  |
Product sales, net | 15,500 |  | 31,000 | 76,100 |
Operating Income (Loss) | (554,843) | (454,306) | (1,711,184) | (2,008,852) |
Depreciation and Amortization | 2,424 | 2,530 | 7,424 | 21,884 |
Income (loss) before taxes and equity in earnings of affiliates | (556,969) | $ (454,906) | (1,713,362) | $ (2,010,595) |
Dental | $ 513,000 |  | $ 513,000 |  | $ 328,208

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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