Consolidated Statements of Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Receivables from Stockholder [Member]	Retained Earnings [Member]	Total
Balance at Mar. 31, 2021	$ 13,000	$ 20,151,000		$ (12,254,000)	$ 7,910,000
Balance, shares at Mar. 31, 2021	1,301,358
Net income (Ioss)				230,000	230,000
Issuance of common stock	$ 6,000	4,944,000			4,950,000
Issuance of common stock, shares	550,000
Issuance of pre-funded warrants		4,882,000			4,882,000
Common stock offering costs		(831,000)			(831,000)
Issuance of common stock for stock offering costs
Issuance of common stock for stock offering costs, shares	19,047
Redemption and retirement of treasury shares	$ (7,000)	(4,301,000)		(2,855,000)	(7,163,000)
Redemption and retirement of treasury shares, shares	(654,105)
Stock based compensation		44,000			44,000
Stock based compensation, shares	2,242
Exercise of stock options		14,000			14,000
Exercise of stock options, shares	2,667
Balance at Mar. 31, 2022	$ 12,000	24,903,000		(14,879,000)	10,036,000
Balance, shares at Mar. 31, 2022	1,221,209
Net income (Ioss)				(1,653,000)	(1,653,000)
Issuance of common stock	$ 19,000	4,489,000			4,508,000
Issuance of common stock, shares	1,909,519
Issuance of common stock for stock offering costs
Issuance of common stock for stock offering costs, shares	1,688
Stock based compensation, shares	15,803
Balance at Dec. 31, 2022	$ 31,000	29,699,000		(16,532,000)	13,198,000
Balance, shares at Dec. 31, 2022	3,148,219
Balance at Mar. 31, 2022	$ 12,000	24,903,000		(14,879,000)	10,036,000
Balance, shares at Mar. 31, 2022	1,221,209
Net income (Ioss)				(4,638,000)	(4,638,000)
Issuance of common stock	$ 10,000	4,026,000	(6,000)		4,030,000
Issuance of common stock, shares	1,014,230
Common stock offering costs		(637,000)			(637,000)
Stock based compensation		145,000			145,000
Stock based compensation, shares	15,803
Exercise of pre-funded and common warrants	$ 10,000	1,148,000			1,158,000
Exercise of pre-funded warrants, shares	914,558
Employee compensation - stock option		237,000			237,000
Other
Rounding of common stock issued due to reverse split, shares	1,688
Balance at Mar. 31, 2023	$ 32,000	29,822,000	(6,000)	(19,517,000)	10,331,000
Balance, shares at Mar. 31, 2023	3,167,488
Net income (Ioss)				(6,398,000)	(6,398,000)
Issuance of common stock	$ 32,000	3,497,000			3,529,000
Issuance of common stock, shares	3,250,573
Common stock offering costs		(179,000)			(179,000)
Issuance of common stock for stock offering costs			6,000		6,000
Issuance of common stock for stock offering costs, shares
Stock based compensation		110,000			110,000
Stock based compensation, shares
Issuance of common stock - at-the -market offering	$ 10,000	1,699,000			1,709,000
Issuance of common stock - at-the-market offering, shares	1,052,770
Issuance of common stock - private placement	$ 22,000	1,977,000			1,999,000
Issuance of common stock - private placement, shares	2,197,803
Other			6,000		6,000
Balance at Dec. 31, 2023	$ 64,000	$ 33,429,000		$ (25,915,000)	$ 7,578,000
Balance, shares at Dec. 31, 2023	6,418,061