401(k) Savings Plan - 401(k) Plan Costs Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	$ 524	$ 353
Cost of revenue
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	87	76
Sales and marketing
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	224	130
Research and development
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	155	103
General and administrative
Defined Contribution Plan Disclosure [Line Items]
Matching contributions	$ 58	$ 44