Note 2 - Summary of Significant Accounting Policies (Details) - Calculation of EPS - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Calculation of EPS [Abstract]
Net income - basic and diluted	$ 1,085	$ 528
Weighted average shares outstanding	37,837	37,816
Net income per share – basic	$ 0.03	$ 0.01
Weighted average shares outstanding (including dilutive CSEs)	38,269	38,047
Net income per share – diluted	$ 0.03	$ 0.01