Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Mar. 31, 2017
Operating Loss Carryforwards [Line Items]
Income tax expense	$ 134	$ 0
Effective tax rate (percent)	(0.15%)	0.00%
Operating loss unavailable for carryforward				$ 1,506
Tax credit unavailable for future use				$ 32
Federal Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 611,296
Operating loss carryforwards, not subject to expiration			320,123
Federal Jurisdiction | RentPath Holdings
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, not subject to expiration			149,710
Federal deductible			18,828
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			18,777
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 3,213