Note 10 - Activity of Business Segments - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Building Supply [Member] | Operating Segments [Member]
Consolidated assets	$ 2,532,000	$ 2,613,000
Disposable Protective Apparel [Member] | Operating Segments [Member]
Consolidated assets	420,000	450,000
Infection Control [Member] | Operating Segments [Member]
Consolidated assets	264,000	368,000
Operating Segments [Member]
Consolidated assets	3,216,000	3,431,000
Corporate, Non-Segment [Member]
Consolidated assets	10,000	10,000
Consolidated assets	$ 3,226,000	$ 3,441,000