Note 14 - Consolidated Net Sales (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Building Supply [Member] | Operating Segments [Member]
Consolidated net sales	$ 25,800,000	$ 27,549,000
Disposable Protective Apparel [Member] | Operating Segments [Member]
Consolidated net sales	14,661,000	14,670,000
Infection Control [Member] | Operating Segments [Member]
Consolidated net sales	4,494,000	5,430,000
Consolidated net sales	$ 44,955,000	$ 47,649,000