Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (45,959)	$ (59,798)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and write-off of property and equipment	1,121	1,372
Amortization of acquired intangible assets	5,524	5,503
Amortization and write-off of other intangible assets	966	739
Amortization of lease right of use assets under operating leases	517	965
Stock-based compensation	11,158	11,289
Impairment of lease right of use assets and leasehold improvements	250	915
Increase in allowance for doubtful accounts	20	89
Changes in operating assets and liabilities:
Trade accounts receivable	(335)	2,232
Other current assets	2,200	(1,933)
Other assets	299	(520)
Accounts payable and other accrued liabilities	660	(3,856)
Deferred revenue	1,627	(371)
Lease liability and other long-term liabilities	(43)	(1,034)
Net cash used in operating activities	(21,995)	(44,408)
Cash flows from investing activities:
Net cash paid for acquisition	0	(3,512)
Purchase of property and equipment	(314)	(934)
Capitalized patent costs	(426)	(533)
Proceeds from maturities of marketable securities	27,664	21,425
Purchases of marketable securities	(14,363)	(12,689)
Net cash provided by investing activities	12,561	3,757
Cash flows from financing activities:
Issuance of common stock, net of issuance costs	0	62,890
Purchase of common stock	(2,724)	(2,356)
Repayment of loans	(36)	(35)
Net cash (used in) provided by financing activities	(2,760)	60,499
Effect of exchange rate on cash	52	(39)
Net (decrease) increase in cash and cash equivalents	(12,142)	19,809
Cash and cash equivalents at beginning of period	33,598	13,789
Cash and cash equivalents at end of period	21,456	33,598
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net	(233)	(61)
Supplemental schedule of non-cash activities:
Property and equipment and patent costs in accounts payable	6	(9)
Stock-based compensation capitalized to software and patent costs	63	128
Common stock issued for acquisition	0	32,393
Warrants issued for acquisition	0	1,601
Right of use assets obtained in exchange for lease obligations	$ 31	$ 5,176