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Note 17 - Supplier Concentration	6 Months Ended
	Jun. 30, 2025
Notes to Financial Statements
Vendor Concentration Risk Disclosure [Text Block]	17. Supplier Concentration Most of the principal raw materials used by the Company consist of common industrial organic and inorganic chemicals that are available in ample supply from numerous sources. However, there are some raw materials used by the Company that are not readily available or require longer lead times. During the first half of 2025 and 2024, the Company had three major raw material suppliers that collectively accounted for approximately 85% and 79%, respectively, of the raw material purchases made by the Company. For the three months ended June 30, 2025, the Company had two major raw material suppliers that collectively accounted for approximately 92% of the raw material purchases made by the Company. For the three months ended June 30, 2024, the Company had three major raw material suppliers that collectively accounted for approximately 83% of the raw material purchases made by the Company. In addition to the Company’s raw materials concentration, the Company utilizes one contract manufacturer for the production of its pharmaceutical product, Renacidin. Any disruption in this manufacturer’s operations could have a material impact on the Company’s revenue stream.

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The entire disclosure for any vendor concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the vendor concentration, and may indicate the percentage of vendor concentration risk as of the balance sheet date.

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