Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash Flows from Operating Activities:
Net (loss)	$ (4,300)	$ (4,731)
Adjustments to reconcile net loss to net cash (used in) operating activities:
Non-cash lease expense	146	152
Depreciation and amortization	82	79
Non-cash reserve charges	(1,100)	1,106
Changes in assets and liabilities:
Accounts receivable	1,306	(1,262)
Licensing receivable	(64)	(5)
Inventory	781	2,044
Prepaid purchases	(31)	64
Prepaid expenses and other current assets	53	27
Other assets	0	8
Accounts payable and other current liabilities	303	(350)
Right of use assets-operating	0	(313)
Right of use assets-finance	0	(6)
Short term lease liabilities	26	43
Long term lease liabilities	(163)	123
Income taxes payable	(663)	(531)
Deferred revenue	(96)	(95)
Net cash (used in) operating activities	(3,720)	(3,647)
Cash Flows From Investing Activities:
Proceeds from sale of short-term investments	20,809	1,409
Purchases of short-term investments	(9,080)	(16,277)
Additions to property and equipment	0	(195)
Net cash provided by (used in) investing activities	11,729	(15,063)
Cash Flows from Financing Activities:
Short term finance liability	0	1
Long term finance liability	(1)	5
Net cash (used in) provided by financing activities	(1)	6
Net increase (decrease) in cash and cash equivalents	8,008	(18,704)
Cash and cash equivalents at beginning of the year	1,186	19,890
Cash and cash equivalents at end of the year	9,194	1,186
Supplemental disclosure of non-cash investing and financing activities:
Right-of-use assets obtained in exchange for new operating lease liabilities	0	313
Right-of-use assets obtained in exchange for new finance lease liabilities	0	6
Cash paid for:
Interest	15	9
Income taxes	$ 676	$ 535