Note 3 - Net Income Per Share (Details) - Net Income (Loss) Per Share - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Income (Loss) Per Share [Abstract]
Net income (loss) (in Dollars)	$ (2,913)	$ 773
Earnings (loss) per share:
Basic (in Dollars per share)	$ (0.13)	$ 0.03
Diluted (in Dollars per share)	$ (0.13)	$ 0.03
Weighted average number of shares of common stock outstanding during the period used to compute basic net earnings (loss) per share (in thousands)	21,711	22,167
Incremental shares attributable to exercise of outstanding options, stock appreciation rights and restricted stock units (assuming proceeds would be used to purchase treasury stock) (in thousands)		1,718
Weighted average number of shares of common stock used to compute diluted net earnings (loss) per share (in thousands)	21,711	23,885