Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net loss	$ (11,730)	$ (10,338)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and write-off of property and equipment	146	193
Amortization of acquired intangible assets	1,403	1,412
Amortization and write-off of other intangible assets	193	271
Amortization of lease right of use assets under operating leases	98	87
Stock-based compensation	1,260	2,831
Increase (decrease) in allowance for doubtful accounts	0	(17)
Changes in operating assets and liabilities:
Trade accounts receivable	(149)	600
Other current assets	1,331	273
Other assets	(105)	(323)
Accounts payable and other accrued liabilities	1,549	(2,624)
Deferred revenue	689	(600)
Lease liability and other long-term liabilities	(171)	(187)
Net cash provided by (used in) operating activities	(5,486)	(8,422)
Cash flows from investing activities:
Purchase of property and equipment	(55)	(106)
Capitalized patent costs	(88)	(106)
Proceeds from maturities of marketable securities	6,564	3,501
Purchases of marketable securities	(2,864)	(10,320)
Net cash provided by (used in) investing activities	3,557	(7,031)
Cash flows from financing activities:
Issuance of common stock, net of issuance costs	0	32,218
Purchase of common stock	(1,545)	(1,781)
Repayment of loans	(15)	(15)
Net cash provided by (used in) financing activities	(1,560)	30,422
Effect of exchange rate on cash	26	(11)
Net increase (decrease) in cash and cash equivalents	(3,463)	14,958
Cash and cash equivalents at beginning of period	12,365	21,456
Cash and cash equivalents at end of period	8,902	36,414
Supplemental disclosure of cash flow information:
Cash received (paid) for income taxes, net	(3)	(18)
Supplemental schedule of non-cash activities:
Property and equipment and patent costs in accounts payable	28	28
Stock-based compensation capitalized to software and patent costs	$ 5	$ 17