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Note 14 - 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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Weighted average basic shares outstanding (in shares)	11,420	11,444	11,526	11,427
Assumed exercise of stock options and issuance of stock awards (in shares)		2
Weighted average diluted shares outstanding (in shares)	11,420	11,446	11,526	11,427
Net income	$ 591	$ 11,599	$ 4,746	$ 35,076
Basic earnings per share (in dollars per share)	$ 0.05	$ 1.01	$ 0.41	$ 3.07
Diluted earnings per share (in dollars per share)	$ 0.05	$ 1.01	$ 0.41	$ 3.07
Unvested RSUs (in shares)	217	91	217	91

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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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