Note 8 - Activity of Business Segments (Detail) - Consolidated net property and equipment, goodwill and intangible assets (USD $)	Sep. 30, 2012	Dec. 31, 2011
Segment Assets	$ 3,670,000	$ 3,753,000
Unallocated corporate assets	49,000	73,000
Total consolidated assets	3,719,000	3,826,000
Building Supply [Member]
Segment Assets	2,318,000	2,142,000
Disposable Protective Apparel [Member]
Segment Assets	539,000	640,000
Infection Control [Member]
Segment Assets	$ 813,000	$ 971,000