Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Operating Activities
Net loss	$ (1,428)	$ (140)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	327	161
Amortization	18	31
Non-cash interest income on held-to-maturity securities	(90)	(72)
Stock-based compensation, net of forfeitures	212	228
Changes in operating assets and liabilities:
Accounts receivable	1,987	(334)
Employee retention credit receivable	1,232	(1,677)
Inventory	(218)	(24)
Prepaid expenses, other current assets and other non-current assets	77	367
Accounts payable	(833)	524
Accrued liabilities and other non-current liabilities	203	(1,728)
Net cash provided by (used in) operating activities	1,487	(2,664)
Investing Activities
Purchases of equipment and patents	(101)	(204)
Purchases of debt securities	(4,949)	(11,107)
Maturities of debt securities	5,750	7,000
Net cash provided by (used in) investing activities	700	(4,311)
Financing Activities
Taxes paid on behalf of equity award participants	(222)	(95)
Net cash used in financing activities	(222)	(95)
Effect of exchange rate fluctuations on cash	114	(104)
Net increase (decrease) in cash and cash equivalents	2,079	(7,174)
Cash and cash equivalents at beginning of period	8,510	17,578
Cash and cash equivalents at end of period	$ 10,589	$ 10,404