Property and Equipment and Long-Lived Assets - Summary of Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Property Plant And Equipment [Line Items]
Depreciation expense	$ 934	$ 666
Cost of Revenue
Property Plant And Equipment [Line Items]
Depreciation expense	34	37
Sales and Marketing
Property Plant And Equipment [Line Items]
Depreciation expense		5
Operations and Support
Property Plant And Equipment [Line Items]
Depreciation expense	11	31
Product Development
Property Plant And Equipment [Line Items]
Depreciation expense	704	570
General and Administrative
Property Plant And Equipment [Line Items]
Depreciation expense	$ 185	$ 23