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Note 9 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Product sales, net | $ 2,232,420 | $ 2,248,845 |
Cost of products sold | 584,985 | 572,742 |
Gross Margin | 1,647,435 | 1,676,103 |
Salaries & employee benefits | 764,720 | 862,952 |
Stock-based compensation expense | 330,788 | 313,505 |
Royalty expense | 112,491 | 115,692 |
Marketing | 112,211 | 113,624 |
Rent & occupancy costs | 33,054 | 30,608 |
Consultants and professional services fees | 1,284,647 | 939,399 |
Insurance | 134,305 | 150,825 |
Warehousing expense | 122,292 | 113,342 |
Regulatory expense | 84,051 | 103,498 |
Travel expense | 66,102 | 51,820 |
Research and development expenses | 369,120 | 94,211 |
Depreciation and amortization expense | 19,440 | 11,684 |
Other segment items | 212,067 | 240,011 |
Total operating expenses | 3,645,288 | 3,141,171 |
Operating income (loss) | (1,997,853) | (1,465,068) |
Total Assets | 9,088,016 |  | $ 9,797,072
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] |  |  |
Product sales, net | 0 | 0 |
Cost of products sold | 0 | 0 |
Gross Margin | 0 | 0 |
Salaries & employee benefits | 117,108 | 250,482 |
Stock-based compensation expense | 330,788 | 311,427 |
Royalty expense | 0 | 0 |
Marketing | 4,261 | 28,317 |
Rent & occupancy costs | 12,707 | 10,713 |
Consultants and professional services fees | 1,084,695 | 637,052 |
Insurance | 42,872 | 75,974 |
Warehousing expense | 1,205 | 2,538 |
Regulatory expense | 64,890 | 97,522 |
Travel expense | 4,473 | 20,893 |
Research and development expenses | 0 | 0 |
Depreciation and amortization expense | 19,440 | 11,684 |
Other segment items | 73,518 | 143,119 |
Total operating expenses | 1,755,957 | 1,589,721 |
Operating income (loss) | (1,755,957) | (1,589,721) |
Total Assets | 3,030,871 |  | 3,992,825
Dental Segment [Member] | Operating Segments [Member] |  |  |
Product sales, net | 2,181,170 | 2,241,425 |
Cost of products sold | 584,896 | 568,296 |
Gross Margin | 1,596,274 | 1,673,129 |
Salaries & employee benefits | 441,497 | 409,582 |
Stock-based compensation expense | 0 | 0 |
Royalty expense | 109,928 | 115,321 |
Marketing | 83,629 | 76,989 |
Rent & occupancy costs | 12,521 | 12,243 |
Consultants and professional services fees | 57,662 | 82,699 |
Insurance | 48,997 | 44,913 |
Warehousing expense | 112,314 | 105,910 |
Regulatory expense | 16,849 | 5,976 |
Travel expense | 31,668 | 7,977 |
Research and development expenses | 364,807 | 93,952 |
Depreciation and amortization expense | 0 |  |
Other segment items | 137,048 | 92,057 |
Total operating expenses | 1,416,920 | 1,047,619 |
Operating income (loss) | 179,354 | 625,510 |
Total Assets | 5,647,891 |  | 5,359,734
Medical Segment [Member] | Operating Segments [Member] |  |  |
Product sales, net | 51,250 | 7,420 |
Cost of products sold | 89 | 4,446 |
Gross Margin | 51,161 | 2,974 |
Salaries & employee benefits | 206,115 | 202,888 |
Stock-based compensation expense | 0 | 2,078 |
Royalty expense | 2,563 | 371 |
Marketing | 24,321 | 8,318 |
Rent & occupancy costs | 7,826 | 7,652 |
Consultants and professional services fees | 142,290 | 219,648 |
Insurance | 42,436 | 29,938 |
Warehousing expense | 8,773 | 4,894 |
Regulatory expense | 2,312 | 0 |
Travel expense | 29,961 | 22,950 |
Research and development expenses | 4,313 | 259 |
Depreciation and amortization expense | 0 | 0 |
Other segment items | 1,501 | 4,835 |
Total operating expenses | 472,411 | 503,831 |
Operating income (loss) | (421,250) | $ (500,857) |
Total Assets | $ 409,254 |  | $ 444,513

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