Summary of Significant Accounting Policies - Disaggregated Net Revenue by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 58,294	$ 46,931	$ 115,746	$ 88,085
WM Business subscriptions
Disaggregation of Revenue [Line Items]
Total revenues	11,563	10,636	22,984	20,258
Featured listings
Disaggregation of Revenue [Line Items]
Total revenues	29,634	25,809	60,119	48,609
Other Ad and SaaS solutions
Disaggregation of Revenue [Line Items]
Total revenues	$ 17,097	$ 10,486	$ 32,643	$ 19,218