Note 10 - Activity of Business Segments (Details) - Reconciliation of Total Segment Income to Total Consolidated Net Income (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	$ 269,000	$ 15,000
Provision (benefit) for income taxes	86,000	(11,000)
Operating Segments [Member] | Building Supply [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	750,000	637,000
Operating Segments [Member] | Disposable Protective Apparel [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	240,000	364,000
Operating Segments [Member] | Infection Control [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	321,000	307,000
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	1,311,000	1,308,000
Corporate, Non-Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated net income	$ 956,000	$ 1,304,000