CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net loss	$ (11,801)	$ (11,671)	$ (34,341)
Adjustments to reconcile net loss to net cash used in
Depreciation	1,344	1,410	1,369
Amortization of intangible assets	1,069	1,085	653
Stock-based compensation	1,157	950	1,612
Impairment on intangibles	0	456	0
Amortization of debt issue costs	206	95	73
Deferred income tax benefit	7	(5)	17,881
Impairment of property and equipment	20	69	0
Loss on sale of property and equipment	91	84	27
Provision for inventory reserves	552	562	628
Provision for credit losses/bad debts	378	170	65
Other	197	12	96
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	800	(464)	(586)
Revenue earned but not billed	1,189	(3,219)	1,426
Inventories	6,106	(603)	1,879
Prepaid expenses and other assets	2,324	(1,384)	2,017
Accounts payable	(5,078)	4,990	2,372
Accrued expenses and other liabilities	1,883	(2,334)	2,209
Deferred revenue, current and long-term	155	(295)	329
Net cash (used in) provided by operating activities	599	(10,092)	(2,291)
Investing activities
Cash to fund acquisitions, net of cash received	0	0	(5,600)
Purchase of property and equipment	(99)	(837)	(586)
Additions to patents and licenses	(6)	0	(9)
Proceeds from sales of property, plant and equipment	233	106	0
Net cash provided by (used in) investing activities	128	(731)	(6,195)
Financing activities
Payment of long-term debt	(206)	(15)	(15)
Proceeds from revolving credit facility	500	0	10,000
Payments of revolving credit facility	(3,500)	0	0
Proceeds from long-term debt	3,525	0	0
Payments to settle employee tax withholdings on stock-based compensation	0	(2)	(2)
Debt issue costs	(216)	0	(29)
Proceeds from employee equity exercises	(13)	3	58
Net cash provided by (used in) financing activities	90	(14)	10,012
Net (decrease) increase in cash and cash equivalents	817	(10,837)	1,526
Cash and cash equivalents at beginning of period	5,155	15,992	14,466
Cash and cash equivalents at end of period	5,972	5,155	15,992
Supplemental cash flow information:
Cash paid for interest	(962)	(691)	(346)
Cash paid for income taxes	(26)	(59)	(87)
Supplemental disclosure of non-cash investing and financing activities:
Issuance of common stock in connection with acquisition	$ 0	$ 0	$ 800