Note 10 - Consolidated Net Property and Equipment, Goodwill and Intangible Assets (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Operating Segments [Member] | Building Supply [Member]
Consolidated assets	$ 2,333,000	$ 2,410,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Consolidated assets	379,000	394,000
Operating Segments [Member] | Infection Control [Member]
Consolidated assets	159,000	166,000
Operating Segments [Member]
Consolidated assets	2,871,000	2,970,000
Corporate, Non-Segment [Member]
Consolidated assets	42,000	43,000
Consolidated assets	$ 2,913,000	$ 3,013,000