Note 8 - Activity of Business Segments (Detail) - Consolidated net property and equipment, goodwill and intangible assets (USD $)	Jun. 30, 2012	Dec. 31, 2011
Segment Assets	$ 3,758,000	$ 3,753,000
Unallocated corporate assets	58,000	73,000
Total consolidated assets	3,816,000	3,826,000
Building Supply [Member]
Segment Assets	2,335,000	2,142,000
Disposable Protective Apparel [Member]
Segment Assets	559,000	640,000
Infection Control [Member]
Segment Assets	$ 864,000	$ 971,000