Note 10 - Activity of Business Segments (Details) - Consolidated net sales (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Segment net sales	$ 12,692,000	$ 10,740,000	$ 33,298,000	$ 31,210,000
Building Supply [Member]
Segment Reporting Information [Line Items]
Segment net sales	8,238,000	5,844,000	20,460,000	17,877,000
Disposable Protective Apparel [Member]
Segment Reporting Information [Line Items]
Segment net sales	3,336,000	3,779,000	9,610,000	10,185,000
Infection Control [Member]
Segment Reporting Information [Line Items]
Segment net sales	$ 1,118,000	$ 1,117,000	$ 3,228,000	$ 3,148,000