Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment [Table Text Block]

Buildings		25		years
Machinery and equipment	5	-	15	years
Office furniture and equipment	2	-	7	years
Leasehold improvements	4	-	5	years

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Years Ended December 31,
	2012		2011
Net income (numerator)	$	977,000	$	933,000
Shares (denominator):
Basic weighted average common shares outstanding		20,703,296		22,077,905
Add: Dilutive effect of common stock options		-		-
Diluted weighted average common shares outstanding		20,703,296		22,077,905
Earnings per common share:
Basic	$	0.05	$	0.04
Diluted	$	0.05	$	0.04

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Fair Value Measurements as of December 31,
	Total		Level 1		Level 2		Level 3
Assets:
Cash equivalents - money market fund - 2012	$	664,000	$	664,000		-		-
Marketable securities - 2012		293,000		293,000		-		-
Cash equivalents - money market fund - 2011		831,000		831,000		-		-