UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net loss	$ (3,758)	$ (6,637)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	348	346
Amortization of intangible assets	248	266
Stock-based compensation	294	188
Amortization of debt issue costs	58	24
Loss (gain) on sale of property and equipment	(6)	28
Provision for inventory reserves	33	161
Provision for credit losses	40	190
Other	(196)	1
Changes in operating assets and liabilities:
Accounts receivable	1,507	(1,075)
Revenue earned but not billed	(301)	89
Inventories	2,156	355
Prepaid expenses and other assets	(304)	(257)
Accounts payable	(3,929)	(1,906)
Accrued expenses and other	490	666
Deferred revenue, current and long-term	(34)	234
Net cash used in operating activities	(2,962)	(7,327)
Investing activities
Purchases of property and equipment	(24)	(508)
Proceeds from sale of property, plant and equipment		95
Net cash used in investing activities	(24)	(413)
Financing activities
Payment of long-term debt	(3)	(4)
Proceeds from long-term debt	3,525
Proceeds from employee equity exercises	1	1
Net cash (used in) provided by financing activities	3,523	(3)
Net increase (decrease) in cash and cash equivalents	537	(7,743)
Cash and cash equivalents at beginning of period	5,155	15,992
Cash and cash equivalents at end of period	5,692	8,249
Supplemental disclosure of non-cash investing and financing activities:
Operating lease assets obtained in exchange for new operating lease liabilities	$ 0	$ 363