Note 14 - Activity of Business Segments (Detail) - Reconciliation of total segment income to total consolidated net income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Segment Income	$ 5,773,000	$ 5,735,000
Unallocated corporate overhead expenses	(4,466,000)	(4,254,000)
Provision for income taxes	(330,000)	(548,000)
Consolidated net income	977,000	933,000
Building Supply [Member]
Segment Income	3,031,000	2,856,000
Disposable Protective Apparel [Member]
Segment Income	1,624,000	1,650,000
Infection Control [Member]
Segment Income	$ 1,118,000	$ 1,229,000