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Note 10 - Shares Outstanding and Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Weighted average basic shares outstanding (in shares)	11,386	11,219	11,384	11,206
Assumed exercise of stock options and issuance of stock awards (in shares)
Weighted average diluted shares outstanding (in shares)	11,386	11,219	11,384	11,206
Net income	$ 2,280	$ (1,757)	$ 14,776	$ 1,026
Basic earnings per share (in dollars per share)	$ 0.20	$ (0.16)	$ 1.30	$ 0.09
Diluted earnings per share (in dollars per share)	$ 0.20	$ (0.16)	$ 1.30	$ 0.09
Anti-dilutive securities outstanding (in shares)	65	167	65	167

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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