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Note 8 - Earnings Per Share - Computation of Net Income Per Share, Basic & Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net income available for shareholders	$ 4,230	$ 1,517
Weighted average number of outstanding shares of common stock (in shares)	3,816	3,736
Dilutive effect of stock awards (in shares)	190	187
Diluted weighted average number of outstanding shares of common stock (in shares)	4,006	3,923
Basic (in dollars per share)	$ 1.11	$ 0.41
Diluted (in dollars per share)	$ 1.06	$ 0.39

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- Definition

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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