Note 10 - Activity of Business Segments (Details) - Consolidated Net Sales (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Consolidated net sales	$ 13,213,000	$ 12,692,000	$ 35,421,000	$ 33,298,000
Operating Segments [Member] | Building Supply [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	8,546,000	8,238,000	21,482,000	20,460,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	3,456,000	3,336,000	10,612,000	9,610,000
Operating Segments [Member] | Infection Control [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	$ 1,211,000	$ 1,118,000	$ 3,327,000	$ 3,228,000