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Note 10 - Earnings Per Share (Details) - USD ($)
shares in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Weighted average basic shares outstanding (in shares) 11,203 11,120 11,200 11,118
Assumed exercise of stock options and issuance of stock awards (in shares) 1
Weighted average diluted shares outstanding (in shares) 11,203 11,120 11,200 11,119
Net income (loss) $ (598,000) $ 1,556,000 $ (21,789,000) $ 7,827,000
Basic earnings (loss) per share (in dollars per share) $ (0.05) $ 0.14 $ (1.95) $ 0.70
Diluted earnings (loss) per share (in dollars per share) $ (0.05) $ 0.14 $ (1.95) $ 0.70
Anti-dilutive securities outstanding (in shares) 124 200 124 200