Note 14 - Activity of Business Segments - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Consolidated assets	$ 2,735,000	$ 3,013,000
Operating Segments [Member]
Consolidated assets	2,694,000	2,970,000
Corporate, Non-Segment [Member]
Consolidated assets	41,000	43,000
Disposable Protective Apparel [Member] | Operating Segments [Member]
Consolidated assets	346,000	394,000
Building Supply [Member] | Operating Segments [Member]
Consolidated assets	2,208,000	2,410,000
Infection Control [Member] | Operating Segments [Member]
Consolidated assets	$ 140,000	$ 166,000