Note 10 - Activity of Business Segments (Details) - Consolidated net sales (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Segment net sales	$ 11,156,000	$ 10,851,000	$ 20,606,000	$ 20,470,000
Building Supply [Member]
Segment Reporting Information [Line Items]
Segment net sales	7,057,000	6,442,000	12,221,000	12,033,000
Disposable Protective Apparel [Member]
Segment Reporting Information [Line Items]
Segment net sales	3,054,000	3,492,000	6,274,000	6,406,000
Infection Control [Member]
Segment Reporting Information [Line Items]
Segment net sales	$ 1,045,000	$ 917,000	$ 2,111,000	$ 2,031,000