SEGMENT INFORMATION - Revenue Disaggregated by Service (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 1,185,112	$ 1,358,748	$ 1,764,355
Operating Segments | Domestic
Segment Reporting Information [Line Items]
Revenue	1,056,122	1,242,941	1,663,317
Operating Segments | Total Ads and Leads revenue
Segment Reporting Information [Line Items]
Revenue	962,601	1,124,908	1,282,061
Operating Segments | Total Ads and Leads revenue | Consumer connection revenue
Segment Reporting Information [Line Items]
Revenue	606,560	781,089	954,735
Operating Segments | Total Ads and Leads revenue | Advertising revenue
Segment Reporting Information [Line Items]
Revenue	312,281	290,799	265,466
Operating Segments | Total Ads and Leads revenue | Membership subscription revenue
Segment Reporting Information [Line Items]
Revenue	43,076	52,305	60,411
Operating Segments | Total Ads and Leads revenue | Other revenue
Segment Reporting Information [Line Items]
Revenue	684	715	1,449
Operating Segments | Services revenue
Segment Reporting Information [Line Items]
Revenue	93,521	118,033	381,256
Operating Segments | International
Segment Reporting Information [Line Items]
Revenue	128,990	115,807	101,038
Operating Segments | International | Consumer connection revenue
Segment Reporting Information [Line Items]
Revenue	106,324	92,635	71,851
Operating Segments | International | Membership subscription revenue
Segment Reporting Information [Line Items]
Revenue	21,709	22,548	28,192
Operating Segments | International | Other revenue
Segment Reporting Information [Line Items]
Revenue	$ 957	$ 624	$ 995