Segment and geographic information - Summary of Financial Information by Each Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Revenue	$ 195,680	$ 195,417	$ 595,859	$ 586,623
Cost of revenue	66,812	72,362	205,499	221,888
Segment adjusted gross profit	135,794	130,403	411,759	386,998
Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(41,335)	(47,520)	(128,122)	(143,509)
Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(11,702)	(10,876)	(34,940)	(34,843)
Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	(6,849)	(6,618)	(21,038)	(21,273)
Enterprise
Segment Reporting Information [Line Items]
Revenue	132,802	126,123	389,847	364,319
Segment adjusted gross profit	100,052	92,793	293,564	264,675
Enterprise | Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(21,455)	(22,973)	(62,309)	(66,213)
Enterprise | Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(9,786)	(9,155)	(29,425)	(29,480)
Enterprise | Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	(1,509)	(1,202)	(4,549)	(3,951)
Consumer
Segment Reporting Information [Line Items]
Revenue	62,878	69,294	206,012	222,304
Segment adjusted gross profit	35,742	37,610	118,195	122,323
Consumer | Content costs
Segment Reporting Information [Line Items]
Cost of revenue	(19,880)	(24,547)	(65,813)	(77,296)
Consumer | Customer support
Segment Reporting Information [Line Items]
Cost of revenue	(1,916)	(1,721)	(5,515)	(5,363)
Consumer | Other segment items
Segment Reporting Information [Line Items]
Cost of revenue	$ (5,340)	$ (5,416)	$ (16,489)	$ (17,322)