Summary of Business and Significant Accounting Policies - Summary of operating segment information (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenue		$ 79,953	$ 72,624
Cost of revenue		20,204	18,889
Research and development		23,533	22,953
Sales and marketing		44,146	40,817
General and administrative		16,268	14,670
Other income (expense), net		2,745	3,671
Provision for (benefit from) income taxes		778	426
Net Income Loss		(22,231)	(21,460)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue		79,953	72,624
Cost of revenue	[1]	18,755	17,145
Research and development	[1]	15,454	13,421
Sales and marketing	[1]	35,866	33,521
General and administrative	[1]	11,995	10,616
Other Expenses		22,081	22,626
Other income (expense), net		(2,745)	(3,671)
Provision for (benefit from) income taxes		778	426
Net Income Loss		$ (22,231)	$ (21,460)

[1] Amounts exclude other segment expenses as follows:     Three Months Ended March 31,     2025     2024   Stock-based compensation expense and related employer payroll taxes $ 21,777     $ 22,313   Amortization of acquired intangible assets   304       313   Total other segment expenses $ 22,081     $ 22,626