RELATED PARTY TRANSACTIONS WITH IAC - Narrative (Details) - USD ($) shares in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Accounts payable	$ 30,393,000	$ 29,467,000	$ 30,393,000
Revenue		1,358,748,000	1,764,355,000	$ 1,619,317,000
Other non-current assets, net	61,527,000	54,466,000	61,527,000
Accounts receivable, net	71,967,000	51,100,000	71,967,000
Advertising expense		$ 459,400,000	558,400,000	553,800,000
Services Agreement
Related Party Transaction [Line Items]
Automatic renewal periods for related party agreement		1 year
Employee Matters Agreement
Related Party Transaction [Line Items]
Voting interest (as a percent)		80.00%
Chief Executive Officer
Related Party Transaction [Line Items]
Related party transactions	2,100,000	$ 9,400,000
IAC
Related Party Transaction [Line Items]
Other non-current assets, net	0	300,000	0
IAC | Services Agreement
Related Party Transaction [Line Items]
Related party transactions		6,400,000	3,800,000	3,900,000
Accounts payable	800,000	0	800,000
IAC | Tax Sharing Agreement
Related Party Transaction [Line Items]
Related party transactions		0	0	$ 1,500,000
Accounts payable	1,400,000	2,100,000	1,400,000
IAC | Employee Matters Agreement | Class A Common Stock
Related Party Transaction [Line Items]
Issuance of common stock to IAC Inc. pursuant to the employee matters agreement (in shares)				2.6
IAC | Employee Matters Agreement | Class B Common Stock
Related Party Transaction [Line Items]
Issuance of common stock to IAC Inc. pursuant to the employee matters agreement (in shares)				0.2
IAC | Sublease Agreement
Related Party Transaction [Line Items]
Related party transactions		1,300,000	1,300,000	$ 600,000
Revenue		600,000	1,700,000	1,600,000
Related Party
Related Party Transaction [Line Items]
Accounts payable	$ 1,100,000	2,200,000	1,100,000
Advertising expense		$ 6,500,000	$ 7,000,000	$ 1,000,000