Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Numerator:
Net income	$ 591	$ 1,420
Less: Allocation of earnings to participating securities	(4)	(11)
Net income allocated to common stock	587	1,409
Basic earnings per share computation:
Net income allocated to common stock	$ 587	$ 1,409
Weighted average common shares outstanding, including shares considered participating securities	7,973	7,890
Less: Weighted average participating securities outstanding	(52)	(71)
Weighted average shares of common stock	7,921	7,819
Basic earnings per share	$ 0.07	$ 0.18
Diluted earnings per share computation:
Net income allocated to common stock	$ 587	$ 1,409
Numerator for diluted earnings per share	$ 587	$ 1,409
Weighted average common shares outstanding for basic earnings per share	7,921	7,819
Incremental shares from stock options	1	11
Weighted average shares and dilutive potential common shares	7,922	7,830
Diluted earnings per share	$ 0.07	$ 0.18