Note 10 - Activity of Business Segments - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Operating Segments [Member] | Building Supply [Member]
Consolidated assets	$ 2,438,000	$ 2,613,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Consolidated assets	408,000	450,000
Operating Segments [Member] | Infection Control [Member]
Consolidated assets	212,000	368,000
Operating Segments [Member]
Consolidated assets	3,058,000	3,431,000
Corporate, Non-Segment [Member]
Consolidated assets	46,000	10,000
Consolidated assets	$ 3,104,000	$ 3,441,000