Note 10 - Activity of Business Segments - Consolidated Net Sales (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Building Supply [Member] | Operating Segments [Member]
Consolidated net sales	$ 7,073,000	$ 7,414,000	$ 12,884,000	$ 12,935,000
Disposable Protective Apparel [Member] | Operating Segments [Member]
Consolidated net sales	3,837,000	3,792,000	7,485,000	7,156,000
Infection Control [Member] | Operating Segments [Member]
Consolidated net sales	1,185,000	1,046,000	2,380,000	2,117,000
Consolidated net sales	$ 12,095,000	$ 12,252,000	$ 22,749,000	$ 22,208,000