REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 297,450	$ 220,251	$ 840,214	$ 687,661
Other
Disaggregation of Revenue [Line Items]
Revenue	180	515	498	1,930
Home
Disaggregation of Revenue [Line Items]
Revenue	112,422	78,859	345,408	232,156
Consumer
Disaggregation of Revenue [Line Items]
Revenue	100,011	48,377	233,594	205,419
Consumer | Credit Cards
Disaggregation of Revenue [Line Items]
Revenue	26,914	6,656	66,975	65,436
Consumer | Personal Loans
Disaggregation of Revenue [Line Items]
Revenue	33,803	12,505	73,879	52,841
Consumer | Other Consumer
Disaggregation of Revenue [Line Items]
Revenue	39,294	29,216	92,740	87,142
Insurance
Disaggregation of Revenue [Line Items]
Revenue	$ 84,837	$ 92,500	$ 260,714	$ 248,156