Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net loss	$ (10,338)	$ (14,040)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and write-off of property and equipment	193	428
Amortization of acquired intangible assets	1,412	1,349
Amortization and write-off of other intangible assets	271	183
Amortization of lease right of use assets under operating leases	87	166
Stock-based compensation	2,831	2,876
Decrease in allowance for doubtful accounts	(17)	0
Changes in operating assets and liabilities:
Trade accounts receivable	600	631
Other current assets	273	1,766
Other assets	(323)	(191)
Accounts payable and other accrued liabilities	(2,624)	(910)
Deferred revenue	(600)	(925)
Lease liability and other long-term liabilities	(187)	(77)
Net cash provided by (used in) operating activities	(8,422)	(8,744)
Cash flows from investing activities:
Purchase of property and equipment	(106)	(51)
Capitalized patent costs	(106)	(112)
Proceeds from maturities of marketable securities	3,501	10,247
Purchases of marketable securities	(10,320)	(1,975)
Net cash provided by (used in) investing activities	(7,031)	8,109
Cash flows from financing activities:
Issuance of common stock, net of issuance costs	32,218	0
Purchase of common stock	(1,781)	(656)
Repayment of loans	(15)	(26)
Net cash provided by (used in) financing activities	30,422	(682)
Effect of exchange rate on cash	(11)	20
Net increase (decrease) in cash and cash equivalents	14,958	(1,297)
Cash and cash equivalents at beginning of period	21,456	33,598
Cash and cash equivalents at end of period	36,414	32,301
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net	(18)	2
Supplemental schedule of non-cash activities:
Property and equipment and patent costs in accounts payable	28	4
Stock-based compensation capitalized to software and patent costs	$ 17	$ 13