Note 10 - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Operating Segments [Member] | Building Supply [Member]
Consolidated assets	$ 2,339,000	$ 2,410,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Consolidated assets	371,000	394,000
Operating Segments [Member] | Infection Control [Member]
Consolidated assets	153,000	166,000
Operating Segments [Member]
Consolidated assets	2,863,000	2,970,000
Corporate, Non-Segment [Member]
Consolidated assets	40,000	43,000
Consolidated assets	$ 2,903,000	$ 3,013,000