Revenue Recognition - Disaggregated Revenue (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]
Revenue	$ 106,760	$ 89,104	$ 198,318	$ 161,752
United States
Disaggregation of Revenue [Line Items]
Revenue	94,152	80,178	177,252	145,780
International
Disaggregation of Revenue [Line Items]
Revenue	12,608	8,926	21,066	15,972
Advertising
Disaggregation of Revenue [Line Items]
Revenue	53,224	47,804	101,892	86,453
Content
Disaggregation of Revenue [Line Items]
Revenue	40,284	24,241	72,563	43,778
Commerce and other
Disaggregation of Revenue [Line Items]
Revenue	$ 13,252	$ 17,059	$ 23,863	$ 31,521