Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Numerator
Net income per consolidated statements of income	$ (1,777)	$ 1,729
Percentage allocated to shareholders *	99.90%	99.50%
Numerator for basic and diluted earnings per share	$ (1,775)	$ 1,720
Denominator
Denominator for Basic earnings per share - weighted-average shares outstanding	7,464	7,650
Dilutive effect of stock options	0	0
Denominator for diluted earnings per share	7,464	7,650
Basic	$ (0.24)	$ 0.22
Diluted	$ (0.24)	$ 0.22