Note 14 - Activity of Business Segments - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Consolidated assets	$ 8,575,000	$ 5,642,000
Operating Segments [Member]
Consolidated assets	7,493,000	4,602,000
Operating Segments [Member] | Building Supply [Member]
Consolidated assets	6,069,000	3,389,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Consolidated assets	1,424,000	1,213,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Consolidated assets	$ 1,082,000	$ 1,040,000