CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Retained Earnings (Deficit)	Total
Beginning Balance - Shares at Mar. 31, 2022	24,486,239
Beginning Balance - Amount at Mar. 31, 2022	$ 24	$ 53,083	$ (154)	$ 11,498	$ 64,451
Issuance of common stock under employee stock option plans, shares	67,514
Issuance of common stock under employee stock option plans, amount	$ 1	178			179
Stock-based compensation expense		638			638
Comprehensive loss:
Net loss				(3,976)	(3,976)
Net unrealized gain (loss) on available-for-sale investments			(27)		(27)
Ending Balance, Shares at Jun. 30, 2022	24,553,753
Ending Balance, Amount at Jun. 30, 2022	$ 25	53,899	(181)	7,522	61,265
Beginning Balance - Shares at Mar. 31, 2023	24,685,059
Beginning Balance - Amount at Mar. 31, 2023	$ 25	55,953	(127)	(4,479)	51,372
Issuance of common stock under employee stock option plans, shares	398,084
Issuance of common stock under employee stock option plans, amount		1,473			1,473
Stock-based compensation expense		820			820
Comprehensive loss:
Net loss				(5,110)	(5,110)
Net unrealized gain (loss) on available-for-sale investments			27		27
Ending Balance, Shares at Jun. 30, 2023	25,083,143
Ending Balance, Amount at Jun. 30, 2023	$ 25	$ 58,246	$ (100)	$ (9,589)	$ 48,582