Segment and geographic information - Summary of Financial Information by Each Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Revenue	$ 199,879	$ 194,360	$ 400,179	$ 391,206
Cost of revenue	67,830	73,244	138,687	149,526
Segment adjusted gross profit	139,580	128,745	275,965	256,595
Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(41,610)	(46,790)	(86,787)	(95,989)
Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(11,677)	(11,652)	(23,238)	(23,967)
Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	(7,012)	(7,173)	(14,189)	(14,655)
Enterprise
Segment Reporting Information [Line Items]
Revenue	129,297	120,556	257,045	238,196
Segment adjusted gross profit	97,528	87,240	193,512	171,882
Enterprise | Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(20,483)	(22,086)	(40,854)	(43,240)
Enterprise | Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(9,754)	(9,841)	(19,639)	(20,325)
Enterprise | Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	(1,532)	(1,389)	(3,040)	(2,749)
Consumer
Segment Reporting Information [Line Items]
Revenue	70,582	73,804	143,134	153,010
Segment adjusted gross profit	42,052	41,505	82,453	84,713
Consumer | Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(21,127)	(24,704)	(45,933)	(52,749)
Consumer | Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(1,923)	(1,811)	(3,599)	(3,642)
Consumer | Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	$ (5,480)	$ (5,784)	$ (11,149)	$ (11,906)