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Note 10 - Income (Loss) Per Share - Loss Per Basic and Diluted Weighted Average Common Shares Outstanding (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Net loss $ 727 $ (1,515) $ (15,097) $ (15,695)
Basic (in shares) 9,597 9,565 9,583 9,558
Effect of potentially dilutive common shares(1) (in shares) [1] 23
Diluted weighted-average common shares outstanding (in shares) 9,620 9,565 9,583 9,558
Income (loss) per common share:        
Basic income (loss) per share (in dollars per share) $ 0.08 $ (0.16) $ (1.58) $ (1.64)
Diluted income (loss) per share (in dollars per share) $ 0.08 $ (0.16) $ (1.58) $ (1.64)
[1] Represents the effect of the assumed exercise of stock options and the vesting of restricted stock units and performance stock awards, based on the treasury stock method.