Note 2 - Summary of Significant Accounting Policies (Details) - Basic and Diluted Net Income per Share Computational Data - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Basic and Diluted Net Income per Share Computational Data [Abstract]
Net income (in Dollars)		$ 5,591	$ 10,494	$ (10,216)
Weighted average basic shares outstanding:
Common stock		41,111	38,656	35,315
Dilutive securities (1)	[1]	1,933	2,576
Totals		43,044	41,232	35,315

[1] For the years ended December 31, 2014 and 2015, the Company's dilutive securities exclude options potentially exercisable in the future into 69,000 shares and 57,000 shares, respectively, because their inclusion would have been anti-dilutive.