Note 10 - Activity of Business Segments - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Consolidated assets	$ 3,328,000	$ 3,441,000
Building Supply [Member] | Operating Segments [Member]
Consolidated assets	2,567,000	2,613,000
Disposable Protective Apparel [Member] | Operating Segments [Member]
Consolidated assets	434,000	450,000
Infection Control [Member] | Operating Segments [Member]
Consolidated assets	317,000	368,000
Operating Segments [Member]
Consolidated assets	3,318,000	3,431,000
Corporate, Non-Segment [Member]
Consolidated assets	$ 10,000	$ 10,000