Property and Equipment and Long-Lived Assets - Summary of Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Property Plant And Equipment [Line Items]
Depreciation expense	$ 944	$ 687	$ 1,878	$ 1,352
Cost of Revenue
Property Plant And Equipment [Line Items]
Depreciation expense	24	12	58	49
Sales and Marketing
Property Plant And Equipment [Line Items]
Depreciation expense		6		11
Operations and Support
Property Plant And Equipment [Line Items]
Depreciation expense	16	56	27	88
Product Development
Property Plant And Equipment [Line Items]
Depreciation expense	723	591	1,428	1,161
General and Administrative
Property Plant And Equipment [Line Items]
Depreciation expense	$ 181	$ 22	$ 365	$ 43