CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Revenue	$ 584,550	$ 464,254	$ 1,075,803	$ 847,057
Operating expenses:
Platform operations	110,459	86,654	214,089	171,521
Sales and marketing	133,867	111,489	255,592	208,711
Technology and development	110,035	98,308	217,721	192,018
General and administrative	135,469	126,130	265,024	256,442
Total operating expenses	489,830	422,581	952,426	828,692
Income from operations	94,720	41,673	123,377	18,365
Other expense (income):
Interest income, net	(17,817)	(17,507)	(34,478)	(31,930)
Foreign currency exchange loss (gain), net	45	(747)	(670)	(24)
Total other income, net	(17,772)	(18,254)	(35,148)	(31,954)
Income before income taxes	112,492	59,927	158,525	50,319
Provision for income taxes	27,463	26,988	41,836	8,054
Net income	$ 85,029	$ 32,939	$ 116,689	$ 42,265
Earnings per share:
Basic (in dollars per share)	$ 0.17	$ 0.07	$ 0.24	$ 0.09
Diluted (in dollars per share)	$ 0.17	$ 0.07	$ 0.23	$ 0.08
Weighted-average shares outstanding:
Basic (in shares)	489,353	488,431	488,952	489,068
Diluted (in shares)	500,040	499,349	499,117	499,570