Net Income Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Net income (loss) (numerator):
Net income (loss)	$ (19)	$ 4,257	$ 5,335	$ 15,034
Shares (denominator):
Weighted average number of common shares outstanding used in basic computation (in shares)	20,301	20,208	20,257	20,165
Common shares issuable upon vesting of restricted stock (in shares)	0	111	72	190
Common shares issuable upon conversion of preferred shares (in shares)	0	10	10	10
Shares used in diluted computation (in shares)	20,301	20,329	20,339	20,365
Net income (loss) per common share:
Basic (in dollars per share)	$ (0.00)	$ 0.21	$ 0.26	$ 0.75
Diluted (in dollars per share)	$ (0.00)	$ 0.21	$ 0.26	$ 0.74