Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
Total revenue		$ 7,747	$ 6,278	$ 15,158	$ 12,978
Cost of revenue:
Total cost of revenue		3,750	2,049	7,817	4,410
Gross profit		3,997	4,229	7,341	8,568
Operating expenses:
Sales and marketing		8,073	6,277	16,018	11,218
Research, development and engineering		6,065	4,213	12,156	8,344
General and administrative		4,487	9,175	10,895	12,668
Amortization expense on acquired intangible assets		321	0	663	0
Impairment of lease right of use assets and leasehold improvements		0	0	574	0
Total operating expenses		18,946	19,665	40,306	32,230
Operating loss		(14,949)	(15,436)	(32,965)	(23,662)
Other income, net		93	18	89	28
Loss before income taxes		(14,856)	(15,418)	(32,876)	(23,634)
Benefit (provision) for income taxes		217	(4)	456	(10)
Net loss		$ (14,639)	$ (15,422)	$ (32,420)	$ (23,644)
Loss per common share:
Loss per common share — basic		$ (0.75)	$ (0.94)	$ (1.76)	$ (1.44)
Loss per common share — diluted		$ (0.75)	$ (0.94)	$ (1.76)	$ (1.44)
Weighted average common shares outstanding — basic		19,539	16,430	18,448	16,382
Weighted average common shares outstanding — diluted		19,539	16,430	18,448	16,382
Comprehensive loss:
Unrealized loss on marketable securities, net of tax of $0		$ (52)	$ 0	$ (250)	$ 0
Foreign currency translation adjustment, net of tax of $0		(2,700)	0	(3,619)	0
Other comprehensive loss		(2,752)	0	(3,869)	0
Net loss		(14,639)	(15,422)	(32,420)	(23,644)
Comprehensive loss		(17,391)	(15,422)	(36,289)	(23,644)
Service [Member]
Revenue:
Total revenue		4,503	3,791	8,123	7,575
Cost of revenue:
Total cost of revenue	[1]	1,744	1,515	3,575	3,085
Subscription [Member]
Revenue:
Total revenue		3,244	2,487	7,035	5,403
Cost of revenue:
Total cost of revenue	[1]	886	534	1,928	1,325
Amortization Expense on Acquired Intangible Assets [Member]
Cost of revenue:
Total cost of revenue		$ 1,120	$ 0	$ 2,314	$ 0

[1] Cost of revenue for Service and Subscription excludes amortization expense on acquired intangible assets.