Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Revenue:
Total revenue		$ 7,411	$ 6,700
Cost of revenue:
Total cost of revenue		4,067	2,361
Gross profit		3,344	4,339
Operating expenses:
Sales and marketing		7,945	4,941
Research, development and engineering		6,091	4,131
General and administrative		6,408	3,493
Amortization expense on acquired intangible assets		342	0
Impairment of lease right of use assets and leasehold improvements		574	0
Total operating expenses		21,360	12,565
Operating loss		(18,016)	(8,226)
Other income (loss), net		(4)	10
Loss before income taxes		(18,020)	(8,216)
Benefit (provision) for income taxes		239	(6)
Net loss		$ (17,781)	$ (8,222)
Loss per common share:
Loss per common share — basic		$ (1.03)	$ (0.50)
Loss per common share — diluted		$ (1.03)	$ (0.50)
Weighted average common shares outstanding — basic		17,344	16,333
Weighted average common shares outstanding — diluted		17,344	16,333
Comprehensive loss:
Unrealized loss on marketable securities, net of tax of $0		$ (198)	$ 0
Foreign currency translation adjustment, net of tax of $0		(919)	0
Other comprehensive loss		(1,117)	0
Net loss		(17,781)	(8,222)
Comprehensive loss		(18,898)	(8,222)
Service [Member]
Revenue:
Total revenue		3,620	3,784
Cost of revenue:
Total cost of revenue	[1]	1,831	1,570
Subscription [Member]
Revenue:
Total revenue		3,791	2,916
Cost of revenue:
Total cost of revenue	[1]	1,042	791
Amortization Expense on Acquired Intangible Assets [Member]
Cost of revenue:
Total cost of revenue		$ 1,194	$ 0

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