Note 14 - Net Income Per Share (Detail) - Basic and diluted earnings per share (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Numerator:
Net income (in Dollars)	$ 2,930	$ 2,214
Denominator:
Shares used in basic net income per share calculation	20,240	19,958
Effect of diluted securities:
Stock options	1,366	1,369
Shares used in diluted net income per share calculations	21,606	21,327
Basic net income per common share: (in Dollars per share)	$ 0.14	$ 0.11
Diluted net income per common share: (in Dollars per share)	$ 0.14	$ 0.10