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Note 9 - Earnings (Loss) Per Share - Computation of Net Income Per Share, Basic & Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Net income	$ 451	$ (2,060)	$ 3,720	$ 1,995	$ 319	$ 3,655
Weighted average outstanding shares of common stock (in shares)	5,339	5,233			5,312	5,199
Fully diluted shares (in shares)	5,360	5,233			5,354	5,333
Basic earnings (loss) per share (in dollars per share)	$ 0.08	$ (0.39)			$ 0.06	$ 0.70
Diluted earnings (loss) per share (in dollars per share)	$ 0.08	$ (0.39)			$ 0.06	$ 0.69
Share-Based Payment Arrangement, Option [Member]
Dilutive effect of shares (in shares)	17	0			28	107
Restricted Stock Units (RSUs) [Member]
Dilutive effect of shares (in shares)	4	0			14	27

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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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