Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Operating Activities
Net loss	$ (2,852)	$ (1,125)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation	537	490
Amortization	62	27
Loss on disposal of equipment	15	0
Interest income on held-to-maturity securities, net of premium amortization and discount accretion	81	(91)
Provision for credit losses, net of recoveries	(1)	0
Stock-based compensation, net of forfeitures	161	269
Changes in operating assets and liabilities:
Accounts receivable	(556)	3,066
Employee retention credit receivable	0	1,677
Inventory	(9)	(4)
Prepaid expenses, other current assets and other non-current assets	429	318
Accounts payable	(226)	(560)
Accrued liabilities and other non-current liabilities	(1,051)	516
Net cash (used in) provided by operating activities	(3,410)	4,583
Investing Activities
Purchases of equipment and patents	(505)	(231)
Purchases of debt securities	(12,102)	(10,004)
Maturities of debt securities	11,000	11,000
Net cash (used in) provided by investing activities	(1,607)	765
Financing Activities
Taxes paid on behalf of equity award participants	(45)	(222)
Net cash used in financing activities	(45)	(222)
Effect of exchange rate fluctuations on cash	(47)	41
Net (decrease) increase in cash and cash equivalents	(5,109)	5,167
Cash and cash equivalents at beginning of period	11,939	8,510
Cash and cash equivalents at end of period	$ 6,830	$ 13,677