Note 10 - Activity of Business Segments (Details) - Consolidated Net Sales (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Consolidated net sales	$ 12,252,000	$ 11,156,000	$ 22,208,000	$ 20,606,000
Operating Segments [Member] | Building Supply [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	7,414,000	7,057,000	12,935,000	12,221,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	3,792,000	3,054,000	7,156,000	6,274,000
Operating Segments [Member] | Infection Control [Member]
Segment Reporting Information [Line Items]
Consolidated net sales	$ 1,046,000	$ 1,045,000	$ 2,117,000	$ 2,111,000